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benzene. It is curious that when pure benzene is allowed to
Remarks. tract upon pure Secl., the latter body undergoes precisely the
(1) The General Catalogue description of this nebula is as same decomposition as when heated to 360°, the liberated follows : “Planetary nebula ; pretty bright, very small, very cilorine reacting with the benzene to form several chlor- little extended.” So far as I know, the spectrum has not yet benzenes and all the selenium remaining in the form of been recorded, but if it is of the same nature as other planetary
nebulæ, bright lines may be expected. The character of the Cl. II, however, the benzene and selenium tetrachloride
chief line, near ^ 500, if visible, should be particularly noted. atc brougiit together in presence of that most useful of inter- (2) Dunér classes this with stars of Group II., but states that meriiate reagents, aluminium chloride, quite a different series of the type of spectrum is a little uncertain. He notes, however, changes occur. On treating the mixture with water, and separat. , that the bands 2, 3, and 7 are visible, so there seems to be no ng and distilling the oil obtained, three distinct fractions may
reasonable doubt about the type. The probability is that it is.
either an early or late star of the group, in which case we should be wllected The first, which passes over at 131°-133', consists
not expect to find all the bands fully developed. The star has ci münochlor benzene. C,H,Cl. The second, distilling at 2279- been provisionally placed in species 2 of the subdivision of the 2x' under a pressure of only a few millimetres of mercury, con- group, but further observations are at once suggested to deter235 of phenyl selenide, (H),Se, corresponding to phenyl mine whether this is right or wrong. If right, the bright Autings splode, (C,H, S, and phenyl oxide, (C&H:),0. It is a yellow of carbon should be fairly prominent, as it is probably due to the al of sp. gr. 1'45 al 19o6. The third fraction, boiling between masking effects of these futings that some of the dark bands are
absent. The carbon flutings near 517 and 474, seen in the spectrum 345* and 250° under the same reduced pressure, consists of of a bunsen or spirit-lamp flame, should therefore be particularly asher new compound of the composition Se,(C,H;),CoH,Cl. looked for. It is possible, too, that in the earlier stars of the Tis sutistance is a red oil of sp. gr. 1'55 at 19°6. On allowing group the hydrogen lines may appear bright, as the swarms are this red oil to stand it deposits yellow crystals of a compound of only a little more condensed than those constituting stars with puwerful odour, which may be obtained recrystallized from bright lines, so that the interspacial radiation may more than
balance the absorption. ale hal in long rhombric prisms. On analysis this substance
(3) According to the observations of Konkoly, this is a good ummis cut to be seleno-phenol, C,11,Sel, analagous to thiophenol example of stars of the solar type. The usual observations, as and mercaptan, both of evil odour. Like all the hitherto in- to whether the star belongs to Group III. or to Group V., are resgated mercaptans, its alcoholic solution readily reacts with required.
(4) A star of Group IV. (Gothard). The main point to be 321:5 of mercury and silver. Analysis of the silver salt leads to
noted in stars of this class is the relative intensities of the lines Islamula C H,SeAg. The reactions by which phenyl selenide of hydrogen and those of iron, magnesium, and sodium, for the ant seleno plienol are respectively produced are believed by M. purpose of arranging them in a line of temperature. If possible, Chabne to be as follows:
The criterion lines which indicate increasing or decreasing tem2CH. + SeCl, = (C:H;), Se + 2HCl + Clo,
perature should also be noted, as in the stars which have Calle + Sell, CEH,Sell + 2Cl2.
hitherto been classed as of the solar type.
(5) This is a star of Group VI., showing the usual carbon The additions to the Zoological Society's Gardens during the
flutings and the subsidiary bands 4 and 5 (Duner). In some fast week include a Black-headed Gull (Larus ridibundus), stars of the group of smaller magnitude, a greater number of British, presented by Mr. E. llart, F.2. S. ; a Chinese Jay secondary bands have been noted, and it seems possible, thereThrush (Garrulas chinensis) from China, presented by Sir fore, that 74 Schj. may not have been observed under the most Harry B. Lumsden, C.B., K.C.S.I., F.Z.S. ; a King Parakeet
favourable conditions. Further confirmatory observations are
therefore necessary before conclusions as to the specific differ1 Afrormiins scapulatus d) from Australia, presented by the
ences between the different stars of the group can safely be ker. A. J. P. Matthews, F.L.S. ; a Peregrine Falcon (Falco drawn. Wyprinus) from Scotland. presented by Mr. Geo. W. Landels ; (6) The spectrum of this variable has not yet been recorded. à Vuhuride Eagle (Aquila verran.i), a Jackal Buzzard (ButcoThe period is 305-7 days, and the range from 8:2-10°6 at sali, a White necked Raven (Corvultur albicollis) from South
maximum to < 13 at minimum (Gore). The maximum occurs
on January 23. Arica, presented by Mr. Marshall; a Pigmy Cormorant (Phala.
(7) This variable star has a period of 244'5 days, and ranges: ***ux africanus), a Moorhen (Gallinula chloropus), two from 7-8.7 at maximum to < 13 at minimum. The spectrum Shining Weaver Birds (Hypochera nitens), four Black-bellied is of the Group II. type, and the range of variability is such Weaver Birds (Euplectes afer 2 % 2 %), two Abyssinian Weaver i that the appearance of bright lines at maximum_may be exEinds Plexeus airyssinicus ė ), four Red-beaked Weaver Birds pected, as in K Leonis, &c., observed by Mr. Espin. The
maximum occurs on January 25.
A. FOWLER, Crucita sanguinirostris 2 0 2 %), four Cutthroat Finches (Amadina fasciala 2 % 2 %), four Orange-cheeked Wasbills THE CLUSTER G.C. 1420 AND THE NEBULA N.G.C. 2237. Extrcka melpoda), a Paradise Whydah Bird (Vidua paradisca 8)
-Dr. Lewis Swift, in the Sidercal Messenger for January 1890,
calls attention to a wonderful nebulous ring entirely surrounding from West Africa, an Indian Silver-Bill (Munia malabarica) from
this cluster. The ring was discovered by Prof. Barnard last inlia, two Cardinal Grosbeaks (Cardinalis virginianus do)
year (Astr. Nach., 2918), and its average outer diameter esti40 [indigo Burd (Cyanospisa cyanea 8) from North America, mated as not less than 40', so that in comparison the ring nebula purchased.
in Lyra is a pygmy. Although Dr. Swift discovered, in 1865, a large diffused nebula north-preceding the star-cluster G.C. 1420,
his attention was first directed to the ring structure by Prof. OUR ASTRONOMICAL COLUMN.
Barnard in January 1889.
The nebula N.G.C. 2237 is in the constellation Monoceros; Sidereal Time at Greenwich at 10 p.m. on January 23 = 6h
its position is R. A. 6h. 24m. 48s., Decl. + 5° 8'; hence it will soon be favourably situated for observation, and Dr. Swift hopes
that Mr. Isaac Roberts will be induced to photograph it, as a Name
change both in brightness and form is suspected.
ON THE SPECTRUM OF Ś URSÆ MAJORIS. -An examination of seventy photographs of the spectrum of this star, taken on as
many different nights at Harvard College, and beginning on Yellowish-red.
-11 46 March 27, 1887, has led Prof. Pickering to conclude that the (3)* Canis Maj.
h. m. S. 5 36 5 615 58 6 48 38 6 31 24 6
K line is double at intervals of 52 days, and that, for several my Geminorita 1117 Sca Reddish-yellow,
days before and after it is seen to be double in the photoil Cancri Reddish
graphs, it presents a hazy appearance. From the period IR Dracunes
16 32 22
assigned, it was predicted that the line should be double
Potsdam mean time.
Nov. 13, 9:3
» 23, 90
was confirmed on the former of these dates by each of three ing of the paper Mr. G. W. Goyder, Surveyor-General, exphotographs. Two more stars have been found having a similar pressing gratitude to Mr. Tietkens, said that although as an periodicity-B Auriga and b Ophiuchi. The hydrogen lines of effort to increase the extent of Australian mineral and gastoral
Ursæ Majoris appear to be broader when the K line is double resources Mr. Tietken's expedition might have been a cumparathan when it is single. Several other lines are also seen double
tive failure, yet the route which he had travelled might serve 23 when the K line is double. Measures of the plates gave a
a most useful base for after-comers. His journey showed thu mean separation of o‘246 millionths of a millimetre for a line no large large river, as had been hoped, flowed into Lave whose wave-length is 448•1, when the separation of the K line, Amadeus, and only gave another proof that the interior a whose wave-length is 393-7, was 0-199.
Australia consists of a series of low mountains with shalloa The explanation of this phenomenon proposed by Prof.
basins, which in wet seasons form lakes and in dry seasoLs Pickering is that the brighter component of this star is itself evaporate. a double star having components nearly equal in brightness, Messrs. GEORGE PHILIP AND Sox have issued an excellen but too close to have been separated as yet visually, and some map showing all Stanley's explorations in Africa from 1868 to interesting results have been worked out which appear to 1889. Each expedition is distinctly marked in colour, and dated support this hypothesis.- American Journal of Science, January on the map; and a condensed account of the explorer's travels 1890.
and discoveries is provided by Mr. E. G. Ravenstein. SpectROSCOPIC OBSERVATIONS OF ALGOL. -A note on the motion of this star in line of sight has previously appeared (NATURE, vol. xli. p. 164). The detailed investigation of the six photographs taken at Potsdam is given by Prof. Vogel in
THE SOURCES OF NITROGEV IN SOILSI Astronomische Nachrichten, No. 2947, from which the following
THIE number of this half-yearly Journal, issued last April, cois taken. Motion towards the earth is represented by a minus tains nineteen valuable contributions, covering a considerable sign, and a motion of recession by a plus sign ; both are ex- portion of the large subject of agriculture. Many of thein are » pressed in geographical miles per second :
purely practical import, such as the report upon the metues Distance from Motion in line
year's prize farm competition, on implements exhibited ain: of sight.
Nottingham meeting, and on the Exhibition of thorouge
stallions of February last. Among the articles of spazzl 1888, Dec. 4, 6.6
scientific interest may be named The History of a Field Dewls 1889, Jan. 6, 5:7
laid down to Permanent Grass," by Sir J. B. Lawes, F.RS, 9, 5.5 194 before.
+7.5 “Grass Experiments at Woburn," by W. Carruthers, F.R.S. - 5:6
“ The Composition of Milk on English Dairy Farms," by De 22:3 before.
Paul Veith, and the Annual Reports of the scientific staff of ide 26, 8:5 1986 before.
Society. The Journal contains 38o closely printed pages, is well From these results it will be seen that, before minimum, Algol
illustrated, and replete with tables and statistics. Among such has an average motion of recession of 6-8 geographical miles
a mass of information, all of which possesses important economie per second, but after minimum it approaches the earth with an
value, it is by no means casy to make a selection for special average velocity of 5'3 geographical miles per second. A re
notice. The changes within the soil, in the formation of a duction of the measures by the method of least squares shows
meadow by Sir John Lawes, are, however, worthy of cluse the velocities per second to be
attention at a time when grazing and stock-feeding appears to
be the most popular remedy for the agricultural depression ander Before the minimum, +5 3 geographical miles,
which the country has so long suffered. These observations are After the minimum, -6'2
also important scientifically, as they throw light upon the in. which give an average motion of recession or approach
teresting question as to the sources of nitrogen in all soils. The miles. The entire system is found to be moving towards the
gradual improvement of grass land, from the period when it .
first laid down until it assumes the character of old pastae, 3 earth with a velocity of 0.5 geographical miles per second.
well-known agricultural fact. The gradual increase in the amount of nitrogen per acre in the meadow selected by Sulio Lawes throws light upon this practical observation, and us
recorded as follows:-" There can be no doube that bere kes GEOGRAPHICAL NOTES.
been a considerable accumulation of nitrogen in the surface sul At a meeting of the South Australian branch of the Royal
during the formation of the meadow (1856 to 1888), amounting Geographical Society, on November 1, 1889, Mr. Tietkens gave
in fact to an average of nearly 52 pounds per acre per annum over an account of his recent explorations in Central Australia. His
the last twenty-three years. The question arises, Whence has expedition was despatched by the Central Australian Exploring
this nitrogen been derived ?” This is, as is well known, a conand Prospecting Association, and consisted of a party of five
troverted point. The balance in favour of this acccumulation ai persons, including a black tracker and a native boy.
nitrogen within the soil is still large, even after every source of point of his journey, when the party came within sight of "an
nitrogen in fertilizers employed, foods fed upon the land by live imposing range,” Mr. Tietkens hoped to find a watercourse flow
stock, rainfall, and from every other possible source is taken ing from its slopes to Lake Amadeus. He was disappointed. No
into account. Therefore, Sir John comes to the conclusion that watercourse worth mentioning was discovered, nor any spring
| the gain of nitrogen in the surface soil must have had its source or place where water could collect. Mr. Tietkens discovered either in the subsoil, the atmosphere, or both. There is mocta several ranges of hills, to which he gave names.
One of the experimental evidence pointing to the conclusion that at any pleasantest places found by him he called Gill's Creek, after the
rate some deep-rooted leguminous plants derive a consideralle hon. treasurer of the South Australian branch of the Royal quantity of nitrogen from the subsoil. Reasoning upon the Geographical Society. Here a stream flows from a range of
que-tion as to how far the whole of the accumulated nitrogen in hills through a gorge or glen of sandstone formation. “This," he the subsoil, Sir John says, "On this point we think it may safely
the surface soil has been derived by deeply-searching roots from says, “was a most beautiful spot, where a few days could be spent profitably, so the camels were unloaded, and Billy and myself
be concluded, from the results of the experiments of Boussingault went up the creek to explore its wonders. We found that the
and of those made at Kothamsted, many years ago, that our creek separated into three distinct channels. Following the
agricultural plants do not themselves directly assimilate the free principal one, we found the creek to be running through a glen
nitrogen of the air by their leaves. But in recent years the with perpendicular cliffs 80 or 100 feet high on each side, and
question has assumed quite a new aspect. It now is, Whether fully three miles in length. We returned to our charmingly
the free nitrogen of the atmosphere is brought into combination situated camp late in the afternoon. ... The water will not be
within the soil under the influence of micro-organisms, or other found to be always running, but in the glen at the head of the
low forms, and so serving indirectly as a source of nitrogen to creek, and which I have named after my sister Emily, large
plants of a higher order? Thus Hellreigel and Wilfartti have deep pools will be found, four or five chains long, 10 and 15
found, in experiments with various leguminous plants, that if a feet deep, and so shaded by rocks from the sun that they cannot ! "The Journal of the Royal Agricultural Society of England," pri više be looked upon as otherwise than permanent.” After the read- (John Murray, Albemarle Sireet.)
w free of nitrogen have added to it a small quantity of soil. baudran. In continuation of his recent communication the author eatract containing the organisms, the plants will fix much more has investigated zircon and ZB ; tin dioxide and samaria ; tanDrogen than wis otherwise available to them in the combined talum pentoxide and samaria ; tin dioxide and Za; tantalum form. It further seemed probable that the growth and crop pentoxide and Za; tin dioxide and ZB; tantalum pentoxide and residue of certain plants favoured the development and action of ZB. All these fluorescent substances are fresh examples of the special organisms. It is admittedly not yet understood, either number of spectra obtained from the same active material with io what way the lower organisms affect the combination, or in different solid solvents. In combination with the agents the solwhat way the higher plants avail themselves of the nitrogen thus vents must naturally always modify the wave-lengths of the bands Trugby into combination. , . . Should it be firmly established as well as their constitution, while still leaving to the various ense such an action does take place in the case of certain plants, spectra of the agents a family likeness, whereby their common itugb not in that of others, it is obvious that part, at any rate, origin may at once be recognized. But if the identity or diversity of the gain of nitrogen by the soil supporting the mixed herbage of two active materials has to be determined by exact wave-length of grass land may be due to the free nitrogen of the air brought measurements, then it becomes essential to operate with abso17 combination under the influence of the action supposed." lutely similar solid solvents. - Multiple resonances of M. Hertz's Tiis must be regarded as an important concession to the view electric undulations, by MM. Edouard Sarasin and Lucien de la bu nitrogen may be derived for the purposes of plant nutrition Rive. Certain experiments are here described, which tend to ipon the inexbaustible ocean of the aimosphere, and it will throw doubt on Hertz's well-known hypothesis on the undulatory polahly not be long before the vexed question of the sources of propagation of electric induction. The reading of the paper was trugen in soils will be placed upon a more satisfactory basis. followed by some remarks by M. Cornu, who pointed out that
JOHN WRIGHTSON. it would now be necessary to receive with the greatest reserve
the theoretical consequences drawn by M. Hertz from his re
markable researches, more especially as regards the measure. SOCIETIES AND ACADEMIES.
ment of the velocity with which the induction is propagated in a LONDON.
rectilinear conductor. His experimental method will have to Royal Society, December 5. 1889.-—"A New Form of
be subjected to much careful study before it can be accepted as a -Age Photometer." By Edmund J. Spitta.
demonstration of the identity of light and electricity.-On the
relation between the electric and thermal conductivities of the The author explained that his attention was called to the *Uzuty of devising an arrangement of this nature during a
metals, by M. Alphonse Berget. In a previous paper the author ee oi experiments upon which he has for some time been en
described an easy method for measuring, by means of simple Kated to ascertain the cause or causes of the discrepancy pre
determinations of temperature, the thermal conductivity of the terly shown to exist when points of light are photometrically
different metals relative to that of mercury, whose absolute
value had already been determined. He has now extended these impared with objects of sensible size (*: On the Appearance realed by the Satellites of Jupiter during Transit," Monthly
determinations to copper, zinc, iron, tin, lead, and several other ier R.A.S., vol. 48).
metals. The tabulated results show that the order of the conThis investigation has served to "Eudicate that a portion of the error to which reference has been
ductivities is the same for heat and electricity, but that the
relation of the mean coefficients of thermal and electric conducmuje anges from the wedge form itself when employed upon a psk of any appreciable area, for it will be remembered that
tivity is not absolutely constant. Hence the law of their prolutterto this instrument bas only been employed upon points of
portionality is only approximately correct, and subject to someght soch as is exhibited by the stars. Woodcuts are given to
| what the same conditions as Dulong and Petit's law of specific Apuain how this takes place, but it may be briefly stated, that as
heats. —Heat of formation of platinum tetrachloride, by M. he field of view in a single wedge photometer is of necessity
L. Pigeon. A process is described for obtaining this substance yanable in intensity of absorption, so the preceding limb of a
in considerable quantities, and the heat of formation of the ark is not extinguished at the same part of the wedge, and so
anhydrous chloride is determined at + 20'5 calories. To comir at the same ** wedge-reading," as the following limb. Hence
plete its thermochemical study M. Pigeon is now endeavouring si en comparing two different sized disks it is not difficult to i to determine its heat of solution in water and that of its hydrate. Nerstand that an error in the "' wedge interval,” technically so
-On the combinations of gaseous phosphoretted hydrogen Tied, must inevitably occur. To meet this difficulty, the error
with boron and silicium fluorides, by M. Besson. The boron *****ing from which will of necessity vary with the size of the
compound has the formula 2BF3.PH3, and is decomposed by
The inga under consideration, the new photometer has been devised.
water with liberation of gaseous phosphoretted hydrogen. 1: esentially consists of two wedges of neutral tinted glass,
silicon compound was obtained in the form of small and very 22nged to pass one another in equal proportions by the turning
bright white crystals, their composition corresponding to two of a single milled headed screw. A little consideration suffices
volumes of phosphoretted hydrogen gas to three of silicon fluoride lo show that by this exceedingly simple means, the field of view
or thereabouts. These and some other compounds that remain the photométer must be absolutely uniform in density through
to be studied render the analogy between phosphoretted hydro!' extent, but that its power of absorption can be increased
gen gas and ammonia still closer. On the state of equilidiminislied by the shifting of the wedges in the manner de
Þrium of a solution of a gas in a liquid, different portions of onled. Abother improvement is submitted by the addition of which are kept at different temperatures, by M. P. Van Berchem. & wicel or tinted glasses of varying density, which, by revolving
These researches were made with hydrochloric acid and amin iront of the eye-piece, enables the operator to employ the monia, their high coefficient of solubility facilitating the detection phenmeter upon objects having a wide range of intensity. The
of slight differences of concentration. The results show that instrament in its complete form, is mounted on the occulting eye
there exists a special state of equilibrium for solutions of gases if rie Jonidiy Vitics R.A.S., vol. 45) to afford the observer
the lower part of the solution is cooled, and the upper part heated. a beau of hiding any object or objects not under examination
-Note on the rotatory power of matezite and matezo-dambose, W be time being, which it is needless to point out is a matter
by M. Aimé Girard. Some numerical errors in the author's former Git great consideration in all photometric comparisons.
papers on the rotatory power of these bodies (Comptes rendus,
ixxvii. p. 995) are here rectified, and the author's fresh experiMathematical Society, January 9.-J. J. Walker, F.R.S., ments confirm his previous conclusion that their rotatory power is l'orijent, in the chair. The following communications were absolutely identical.- Papers were submitted by M. Emile Picard, Fonte:- On the deformation of an elastic shell, by Prof. H. Lamb,
on the employment of successive approximations in the study of :A S.-On the relation between the logical theory of classes and certain equations with partial derivatives ; by MM. Maquenne
geometrical theory of points, by A. B. Kempe, F.R.S.--On and Ch. Tanret, on a new inosite (“ racemo-inosite "); by M. e correlation of two spaces, each of three dimensions, by Dr. Edouard Heckel, on the utilization and transformations of some :!irl - Jn the simultaneous reduction of the ternary quadric alkaloids present in corn during germination ; by M. A. Giard, and catac in the forms Ar + By? + Cz! + Dova, ar! + by:8 +
on the relationship of the annelids and mollusks; by M. Léon -dat, by the President (Sir J. Cockle, F.R.S., Vice- Vaillant, on the bichique (Gobius and Sicydium) fisheries in the esident, in the chair.
island of Réunion ; by M. A. Vaissiere, on Prosopistoma Paris.
variegatum of Madagascar ; and by M. Salomon Reinach, on the Academy of Sciences, January 13.-M. Hermite in the volcanic eruptions supposed to have taken place in France during 117.- On some new Aluorescent materials, by M. Lecog de Bois- the fifth century A.D.
SOCIETY OF Arts, at 8.-The Utilization of Blast-furnace Slag, Gib Physiological Society, December 27, 1889.- Prof. du Bois- Redgrave. Reymond, President, in the chair.—Dr. Augustus Waller, of
THURSDAY, JANUARY 30 London, demonstrated the electrical negative variation of the
ROVAL INSTITUTION, at 3.--Sculpture in Relation in the Age: Da
Roscoe Mullins. heart which accompanies the pulse. The demonstration was
FRIDAY, JANUARY 31. preceded by a short introductory description of the method by ROYAL INSTITUTION, at 9.-Smokeless Explosives: So Frederick Aben which it is possible to detect the negative variation accompany
SATURDAY, FEERLANY 1. ing each beat of the heart both in man and other normal
ROYAL INSTITUTION, at 3.-The Natural History of the Horse, art, animals. The peculiar position of the heart determines the its Extinct and Existing Allies : Prof. Flower. CB..F.R.S special position of the equipotential lines for the cardiac muscle, and these then determine the way in which the electrodes must BOOKS, PAMPHLETS, and SERIALS RECEIVED. be applied to the outer sursace of the body in order to obtain
Atlas of Commercial Geography: J. G. Bartholomew (C. J. Clay) the most marked results. Thus, for instance, when one pole of tric Light, 3rd edition : J. W. Unjuhart (C. Lockwool) - Sonth Amee. the capillary.electrometer is applied to the head or right Birds, Parts 1 and 2: H Nehrling i Wesley). -Handbuch der Paloma
ii. Ahthg., 8 Liefg. (München). - Handbuch der Paipontologie, i 44 shoulder of a man, while the other pole is connected with his
ini. Band, 3 Liefg. (München). -Year: book of Photography furnia left hand, this arrangement is effective, and the mercurial
and Carter). - Livy, Book xxi. : Allcroft and Mason (Clive) - Queeni"! meni-cus in the electrometer can be seen to move synchronously Meteorological Report for 1887: - Handleiding tit de kennis der hins with the pulse. When the poles are applied to the left shoulder
Nederlandisch Indic. Eerste Decl: Dr. J. C. Boerlage (Leiden, Bril)-1,
Arten der Gattung Ephedra : Dr. O. Stapf (Wien). -Grasses of the sotme and left foot, or left hand and left foot, or right hand and right | Punjab : w. Coldstream (Thacker), – Prof. Arnold Guyat: 1.1 Dfoot, these arrangements are non-effective. In the horse, dog, (Washington). - Miscellaneous Papers relating to Anthropology (Waste and cat, results are obtained by connecting the fore-limbs with
ton). --Accounts of the Progress in Arushropol gy, Zoology, Mits the hind.Jimbs through the electrometer ; this is due to the fact Chemistry, Physics, Geography and Explorasice, Volcan slogy 250 S
mology. North American Geology an 156, (Was ington) -- Eiwitegapos su that in these animals the heart is placed with its axis from right North American Palarontology in 1550 (Washingwn)-The loan to left, thus dividing the body symmetrically into a front and Science in the Last Half Century: 1. H. Huxley i Washington) -R binder half. The demonstrations were made on a man, a horse,
the Smithsonian Exchanges for the Year encing June 3, 185(W22
too).- Preservation of Museum Specimens from Insects and the Efirst and a dog.-Mr. Auschütz exhibited an apparatus (“Schnell
Dampness: W. Hough (Washington)-Ethno-Conchology: RX seher”) for the stroboscopic examination of instantaneous Stearns (Washington). - The Human Beast of Burden: O. Tux photographs (twelve per second) of moving objects. The Washington). - Notes on the Areitial Deformation of Children 27
Savage and Civilized Peoples : Dr. J. H. Purter (Washington). - rada: reproduction of the movements afforded by the instrument was
the American Aborigines : 0. T. Mason (Washington) -The Ethos Tipas very perfect.
of 1839, Part r: J. Johnstone (Edioburgh, Gemmell). - I hind Annual Re, STOCKHOLM.
on the Puffin Island Biological Station : Dr. W. A. Herdman (L YET" !
- Journal of Anatomy and Physiology. January (Williams and Ning) Royal Academy of Sciences, January 8.-On our know- Traité Encyclopédique de Photographie, January 15 (Pans, Gauthia Villari ledge of the nature of the Antarctic regions, and on the desirable. -Records of the Geological Survey ol India, vol. xxii, Part . - J. ness of researches there as well planned and comprehensive as i
of the College of Science, Imperial University, Japan, vol mu, Pe
(Tokio). those which have been conducted by Swedish investigators in the Arctic regions during many years, by Baron Nordenskiöld. If contributions could be obtained from Australia, Baron 0.
PAGE Dickson and Baron Nordenskiöld would fit out a scientific ex- The Future Indian Civil Service Examinations pedition to the Antarctic regions to start from Sweden in 1891.
The Shan States On remains of birds from the Saltholms Limestone (Upper
The Lesser Antilles. By D. M.. Cretaceous) at Limhamn, in Scania, by Prof. W. Dames, of
A Text-book of Human Anatomy. Berlin. (The right humerus, scapula, and coracoideum, of Our Book Shelf:probably a wading-bird, being next the Enaliornis of the chalk Johnson : "A Treatise on Ordinary and Partual of Cambridge, in England, the only European find of a Cre
Differential Equations" taceous bird. It has been named Scaniornis Lundgreni, Dam.)
Harris : “ The Land of an African Sultan"
Letters to the Editor :Schrenk, of Leipzig.-On the secretions of the digestion in the Influenza.-W. Greatheed ; Augustus Harvey median intestines, and some phenomena in combination therewith Rainbow due to Sunlight reflected from the Sa. in insects and Myriapoda, by Dr. G. Alderz.
(Illustrated.)-Sir William Thomson, F.R.S.:
Osteolepidæ.-R. L. + E.
Exact Thermometry. --Dr. Sydney Young
Foreign Substances attached to Crabs.-F. Ernest
372 Royal Society, at 4.30.-On a Photographic Method for Determining Galls.-W. Ainslie Hollis
Variability in Stars : Isaac Roberts.-Physical Properties of Nickel The Evolution of Sex.- Dr. A. B, Meyer
“Manures and their Uses,"_Dr. A. B. Griffiths ; Hopkinson, F.R.S. (Di-cussion.)
Notes on a Recent Volcanic Island in the Pacific Roads in Ceylon : Thos. H. Chapman.
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