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the arteries of the brain in the class Aves: F. E. regions in the North Temperate Zone, each with a conBeddard, F.R.S.-The function of the antenna

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siderable proportion of endemic species. (1) Europe, with insects : M. Yearsley. After reviewing the litera- twenty-nine species; (2) Northern Asia with China and ture on the subject the author pointed out that Lowne, Japan, twenty-six species; (3) Western Asia, with eighteen in his work on the blowfly, suggested that the antennæ species; (4) India, with nine species; (5) Western North were probably balancing rather than auditory organs. America with the Rocky Mountains, with ten species, it) Lord Avebury and Latreille were cited in favour of this Eastern North America, six species.--The botany of the view, and the work of Yves Delage on Crustacea and of Anglo-German Uganda Boundary Commission-Polypetale, Clemens upon a moth (Samia cecropia) as confirmatory E. G. Baker; Gamopetalæ excl. Convolvulacea, S. Moore : experiments. The author then gave details of experiments Convolvulaceæ, Apetalæ, and Monocotyledons. Ds. A. B. upon thirty wasps (Vespa vulgaris) in which the antennæ Rendle. The Commission commenced demarcating the had been removed. The results of this mutilation were :-- boundary in the Uganda Protectorate in December, 102, (1) Loss of power of flight; (2) loss of sense of direction ; H.M. Commissioner on the British side being Lieut -Col. (3) noticeable slowness in all movements. The conclusion Delmé-Radcliffe. The collections which are the subject of arrived at was that in wasps, the antennæ were equilibrat- this paper were made by Dr. A. G. Bagshawe, the medical ing in function. This supported Lowne's surmise and officer. They contain a considerable number (some hity) of orroborated the experiments of Clemens on Samia cecropia. novelties, as also of known plants not hitherto recorded

from the Uganda Protectorate. For the Angolan plant preAnthropological Institute, February 14.-Prof. W. Gowland, president, in the chair.-Exhibition of native

viously known as Asystasia africana. C. B. Clarke, which

also is in the collection, a new genus, Styasasia, is pret dances and ceremonies from the Torres Straits : Dr. A. C.

posed. A considerable percentage of West Airican cousiHaddon, F.R.S. The exhibition was illustrated by lantern

plants is a feature of the Protectorate fora as now made slides and kinematograph films, and dealt with the

known, and worthy of mention is the presence of a small Malu ceremony,

secular dances, and fire-making South African element. by a rotary method. Dr. C. S. Myers sang several Cf the native songs, which

CAMBRIDGE. sung at the dances, and accompanied himself

native drum.-Dog- Philosophical Society. January 30.-Prof. Marshall Ward, motive in Bornean design : E. B. Haddon. The methods of F.R.S., president, in the chair.-On the non-electrification of tattooing are constant among the tribes of Borneo, and most y rays; Prof. Thomson, F.R.S. Experiments were described of the patterns are derived from the Kenyah and Kayan in which the electrifications imparted to two equal cylinders tribes. The different patterns are all derived from the dog- made of thin brass, one of them hollow and the other filled motive. The rosette pattern, for instance, which is tattooed with lead, were measured. The cylinders were in electrical on the shoulders of the men, is directly derived from the eye connection and were symmetrically placed in a large vesel cf a dog, although the Iban tribe, who have adopted the from which the air was exhausted. The cylinders were m. pattern, call it by the name of various fruits and flowers. posed alternately to the wy rays of radium, and from the The conventional tattoo pattern found on the firearms of measurement of the charges received by them it was car Kenyah and Kayan men in Sarawak, although modified out cluded that the electrifications observed when y rays fall on of all recognition, is also clearly derived from the same a body are not due to a charge on the q rays, but to the source, as it is named asu, which means dog ; from this charge carried by secondary Brays excited by the y rats when

7 same pattern a series can be traced to the Iban pattern, they fall on the body or on the walls of the vessel containing which is said to represent a scorpion, Kala, but was clearly it. Are metals made radio-active by the influence of radiun originally a dog. Similarly the so-called prawn pattern, radiation ? Prof. Thomson, F.R.S. From esperiments l'dang, was shown to be derived from the dog-motive. made on lead, brass, and tin it was shown that these bodies. Royal Meteorological Society, February 15.- Mr. R.

after exposure to radium radiation, exhibit no trace of radio Tentley, president, in the chair.-Report on the phenological

activity four minutes after the radiation has ceased to the observations for the year 1904: E. Mawley. The weather

upon them ; there was no evidence of induced activity of any

kind, but the method used was not adapted for testing tbe cf the phenological year ending with November, 1904, was chiefly remarkable for the persistent rains in January and

existence of a very short-lived radio-activity; this has been February, the absence of keen frosts in May, the long con.

done by Prof. Bumstead by a method described in the net tinuance of hot and dry weather in July, and the small rain

paper.-Are metals made radio-active by the influence o

radium radiation ? Prof. Bumstead. The experiments fall during the autumn. Throughout the year wild plants came into flower behind their usual dates, but at no period

described formed a continuation of those reported by Prof were the departures from the average exceptional.

Thomson, and were designed to ascertain whether the

Such spring migrants as the swallow, cuckoo, and nightingale secondary rays given out by a surface exposed to the Bands made their appearance in this country at as nearly as pos

rays of radium persisted for a very short time after the sible their usual time. The yield of wheat per acre was the

exposure to the exciting rays had ceased. A rotating dis

was used and four substances were tested, vix. copper, lead. smallest since 1895, while those of barley, beans, and peas were also deficient. On the other hand, there were good

tin, and blotting-paper which had been soaked in a soluto

of uranium nitrate and then dried. The interval between crops of oats, potatoes, and mangles. The best farm crops of the year were, however, those of hay, swedes, and

exposure to the rays from 30 mg. of pure radium brone turnips. Both corn and hay were harvested in excellent

and the subsequent test for residual activity was less tha* condition. Apples were everywhere abundant, and all the

0.009 second ; and no rays capable of penetrating MIM. 12 small fruits yielded well, especially strawberries, but there

air and 0.00005 cm. of aluminium were detected. I an was only a moderate supply of pears and plums.--Ob.

were present they must have been considerably less inte scrvations of meteorological elements made during a balloon

than those given out by a layer of potassium uranium

phate with a surface-density of one milligram per squst as ent at Berlin on September 1, 1904: Dr. H. Elias and J. H. Field.--The winds of East London, Cape Colony :

centimetre.--Note on the positive leak from hot platinum :

air : 0. W. Richardson. Experiments showing that er J. R. Sutton.

rate of discharge of positive electricity by a platinum er Linnean Society, February 16.-Prof. S. H. Vines, F.R.S., which had been heated in air long enough for the current » vice-president, in the chair.-A revised classification of become steady, consists of two parts, one proportional ! roses : J. G. Baker, F.R.S. The author dealt with the and the other independent of, the pressure. --Some meth genus by dividing it into three groups.

In the first group

of increasing the spark length of the Wimshurst machia pri nary species were enumerated ; in the second, sub- B. J. Palmer. Species and varieties; in the third, the principal hybrids. February 13.-Prof. Marshall Ward, president, in The primary species as estimated by the author are sixty-chair.-Orthogonal and other special systems of invariai nine in number, and they are classified under eleven groups. part i. : Major P. A. MacMahon, FR.S. In this page The geographical distribution can be very briefly stated as orthogonal concomitants are discussed by means of a : follows :--Five species are found south of the Tropic of bolic calculus with imaginary umbre. For a binary qua Cancer in elevated situations, two in Abyssinia, one in the of any given order, the author finds an inferior limit to it Neilgherries, and two in Mexico. There are six geographical | maximum degree of an irreducible covariant of given to

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belonging to it : a superior limit is also found in certain being the uncia, or ounce, and other weights related cases. For the first three degrees of the concomitants, for thereto : F. A. Bruton.-A direct determination of the a quantic of any order, the actual number of irreducible atomic weight of chlorine by burning a known weight of concomitants is found ; and hence the number of funda- | hydrogen in a known weight of chlorine : Prof. H. B. mental syzygies is inferred. Tables of ground-forms are Dixon, F.R.S., and E. C. Edgar. The hydrogen was given for quantics of order 2, 3, 4, 5, 6 respectively.-occluded in palladium and so weighed; the chlorine was Reduction of generating functions by means of complex prepared by the electrolysis of silver chloride, and was integration : G. B. Mathews, F.R.S. It is shown in this weighed in the liquid state. The atomic weight comes out note how a class of generating functions which occur in the about 35.192, higher than the accepted number by 0.012. theory of invariants, and in that of the partition of num- This higher value is of interest in view of the recent (unbers, may be reduced by means of Cauchy's calculus of published) work of Prof. Theodore Richards, of Harvard, residues.

who obtains a value 0.019 higher than the accepted

atomic weight.--On the occurrence in Britain of the Pacific DUBLIN.

eider (Somateria v-nigrum, Gray), a species new to the Royal Irish Academy, February 13. - Prof. R. Atkinson, European avifauna: Č. Oldham.-Some habits of bats, president, in the chair.-Verb functions explicit with special reference to the lesser horse-shoe bat (Rhinooperations, with

the solution of equations lophus hipposiderus) : C. Oldham. Proofs were given that by operative division : Major Ronald Ross, C.B., F.R.S. the hibernation of these animals is not continuous, but If any expression is being considered as the result of an

interrupted by transient periods of activity. operation performed on one of its elements, the actual operation can be separately and explicitly represented in

Paris. the following manner. The place occupied by the subject- Acadenıy of Sciences, February 20.-M. Troost in the element is called the base of the operation and is always chair.-Observation of the partial eclipse of the moon on denoted by B. Thus, B cos-'B is the operation performed February 19: G. Bigourdan. Owing to the cloudy conon x in order to produce the function x cos-'x. As B has dition of the sky no observations were possible before 7.50 no quantitative value, such an expression as B cos-'8 de- p.m.-On a new method of synthesis of alkyl derivatives of notes, not a quantity, but an action, and may be called a certain cyclic saturated alcohols : A. Haller and F. March. verb function. Before applying such an expression to a The sodium derivatives of propyl, isobutyl, and isoamyl subject it must be placed in special (square) brackets in alcohols, heated to 200° to 225o C. in an autoclave with order to distinguish operation from multiplication. The B-methylcyclohexanone, act partly as reducing and partly as method may be applied to the solution of a complete equa- alkyl substituting agents. Homologues and isomers of mention of the nth degree in an ways, and applies equally to thol result from the reaction.-On the examples of Palithe solution of linear differential equations.

nuridæ and Eryonidæ collected in the eastern Atlantic by

the French and Monaco expeditions : E. L. Bouvier. The EDINBURGH. Royal Society, February 6. - Dr. Traquair in the chair.— study of the collections brought home by the two expeditions

has resulted in the discovery of some new interesting On Penella, a Crustacean parasitic on the Finner Whale

species, among others two types belonging to the genera (Balaenoptera musculus): Sir William Turner.

Puer and Eryonicus, examples of which are extremely pod was originally recognised by Koven and Danielssen as

These two forms show their distinctive morphological parasitic on Balaenoptera rostrata. The author's specimens characters very early.—The application to the nitriles of the were obtained in 1903 from B. musculus. The memoir com

method of direct hydrogenation by catalysis; the synthesis prised an account of the external characters and internal

of primary, secondary, and tertiary amines : Paul Sabatier anatomy of the female, which, being from 10 to 12 inches

and J. B. Senderens (see p. 423). --The large solar spot of long. varying in different specimens, is a giant amongst February, 1905: Th. Moureux. On February 2 this spot, copepods. A comparison of the species with other species which was clearly visible to the naked eye, had a length of of Penella was made, and the great length of the thoracic

180,200 kilometres. Its area was 1/29th of the solar disc, and in comparison with the genito-abdominal segment was re- hence it is greater than any sun-spot previously observed.ferred to. The male of this species has not yet been recog

On Taylor's series on the circle of convergence : Paul nised.--The ontogeny of the neuron in vertebrates; Dienes.-On differential equations of the second order concytological study of the embryonic nucleus: Dr. John taining single parameter : G. Tzitzeica.-On, the Cameron. The results of the investigation tend to show

approximate integration of differential equations : Emile that the so-called neuroblasts of the central nervous system

Cotton.---On the mode of working of the differential gear in the early vertebrate embryo are really nuclei, from which

of automobiles : A. Petot.--On the coefficient of magnetisathe rudiments of the axis cylinder are formed as delicate pro- tion of bismuth and on some fixed points in the diamagnetic trusions. The neuroblast nuclei are found to exhibit re

scale : Georges Meslin. The coefficient found for mercury markable structural changes, as evidence of the formation

was -0.185.10-, taking

-0.79. 10-6. For of these processes. The results attained in this research

crystallised bismuth the value, with the additive correction support the central theory of nerve-genesis as formulated by,

for the air, was -- 1.39.10-", whilst a slightly higher result, among others, His and von Kölliker. They also tend to

-- 1.42.10-", was obtained for the fused metal.--On the perthrow fresh light on the properties and functions of the cell

borates : P. Melikott. A claim for priority as against M. nucleus.

Jaubert.-On lactyllactyllactic acid and the dilactide of the MANCHESTER.

inactive acid : E. Jungfleisch and M. Godchot.- On the Literary and Philosophical Society, February 7.- carbimide of natural leucine : MM. Hugouneng and Morel. Prof. H. B. Dixon, F.R.S., vice-president, in the chair. The leucine ethyl ester was heated to 130° C. with carbony! A new direct-vision spectroscope : T. Thorp. In Mr. chloride in toluene solution, and the mixture submitted to Thorp's instrument the dispersion is effected by means of fractional distillation in vacuo. The carbimide sought for a transparent grating of about 14.500 lines to the inch, was readily separated in this way from the substituted urea mounted on the long face of a light crown prism having a formed at the same time. On the perborates : J. Bruhat refracting angle of about 37° to secure direct vision. This and H. Dubois. A description of the preparation and proprism-grating is mounted in a hinged frame and adjusted perties of the perborates of potassium, sodium, and amso that the grating face is at an angle of 45° with the axis monium.-- Issimilation outside the organism : Ch. Berof the instrument when the frame is at the centre of its nard. It has been stated by Friedel and confirmed by range of motion. A spring holds the frame tightly against Macchiati that the

extracted from leaves by the end of a micrometer screw having a graduated head, glycerine in the presence of chlorophyll and light was this head being in the focus of a lens placed near the capable of decomposing carbonic acid and setting free ocular of the spectroscope so that it can be read off without oxygen. The author has not been able to obtain any trace taking the instrument away from the eye. The D lines of oxygen under these conditions, and on repeating an excan just be separated in the pocket instrument, and read-periment exactly in accordance with Macchiati's instructions ings can be made by taking the mean of several to about found that the gas evolved consisted of methane and other one Angstrom unit.-Leaden weights found at Melandra inflammable gases, arising from the anaërobic decom. Castle, an old Roman edifice near Glossop, among them position of the plant tissue, this change not taking place

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400 410

WEDNESDAY, March 8. in the presence of antiseptics, such as camphor. The

GEOLOGICAL SOCIETY, at 8.-(1) Observations on some of the Loxonerna author therefore regards the decomposition of carbonic acid

tidæ, with Descriptions of two New Species : (2) On some Gasteropca outside the plant as unproven.-On the composition of from the Silurian Rocks of Llangadock : Miss Jane Donald. brandy from wine : X. Rocques. A table is given show- Society of Arts, at 8.--Ethics of Japanese Society : Baroa Sugemuse

THURSDAY, MARCH 9, ing the results of analysis of twenty-two samples of brandy

ROYAL SOCIETY, at 4.30. -Probable Papers: The Rate of Transmission of arising from the distillation of wine, and it is pointed out that

the Guatemala Earthquake of April 19, 1902: R. D. Oldbam.-luoc a brandy containing a relatively small amount of esters con- Sizes in Relation to the Conductivity of Electrolytes : W. R. Biores tains an increased amount of higher alcohols.—The pre

– Explosions of Mixtures of Coal Gas and Air in a Closed Vesse:

L. Bairstow and A. D. Alexander. diction of a chemical reaction forming a monovariant

Royal INSTITUTION, at 5.-Recent Astronomical Progress : Prof. H. H system : Camille Matignon.-On two plants producing Turner, F.R.S. rubber : E. de Wildeman. A description of two plants, INSTITUTION OF ELECTRICAL ENGINEERS, at 8.-Report on Experiments Bassea gracillima and Periploca nigrescens, the rubber pro

carried out at the National Physical Laboratory : On the Effect of Heat

on the Electrical and Mechanical Properties of Dielectrics, and contre ducing properties of which have not hitherto been recog

Temperature Distribution in the Interior of Field Coils : Dr. R. I nised.-On a new coffee plant in Central Africa: Aug. Glazebrook, F.R.S.--On Temperature Curves and the Rating of Chevalier. A detailed account of Coffea excelsa, with Electrical Machinery : R. Goldschmidt.

FRIDAY, MARCH 10, analyses of the soil in which it flourishes and of the coffee

ROYAL INSTITUTION, at 9.–The Structure of the Atom: Prol. ). ] bean produced from it. The amount of caffeine and the

Thomson, F.R.S. taste and aroma of the coffee are good, and would be worth ROYAL ASTRONOMICAL SOCIETY, at 5. cultivating in the French Congo.-On the secreting ap

MALACOLOGICAL Society, at 8.-On a Dibranchiate Cephalopod from the

Eocene of Arabia : G. C. Crick.-Note on the Horizon and Lxality of paratus of Dipterocarpus : P: Guérin.-On the effect of low

the Type Specimen of Pleuronautilus pulcher : G. Crickle temperatures the zoospores of the Algæ: E. C. Marine Mollusca from the Collection of the late Admiral Keppel: GB Teodoresco. The spores of Dunaliella salina were found Sowerby.-On the Occurrence of Internal Septa in Glyptost.u.4mar,

berryanum: G. K. Gude.- Note on a Dart found in the Body Cavity sť to retain their activity in a salt solution even after exposure

Helix aspersa: R. G. Barnes. to a temperature of -30°C.-On a new cellular type with

INSTITUTION OF Civil ENGINEERS, at 8.-The Purification of Sewage : metamerised cytoplasm, Taenicystis mira : Louis Léger- F. G. Helsby, -The Purification of Sewage by Hydrolysis and Oxida Geographical variations of the Pleuronectidæ : A. Cligny.

tion : F. 0. Kirby.

PHYSICAL SOCIETY, at 8.-On the Stresses in the Earth's Crust before and The extension of the functional states of the auricle to the

after the Sinking of a Bore-hole : Dr. C. Chree, F.R.S.-On th: Latera ventricle : H. Kronecker. The author's experiments lead Vibration of Bars of Uniform and Varying Sectional Area : ) Morros.him to regard this effect as being entirely due to nervous

On Direct Reading Resistance-Thermometers, with an Appendix o elements.--Variations in morbid processes according to the

Composite Thermocouples : A. Campbell.

SATURDAY, MARCH 11. composition of the organs : MM. Charrin and Le Play. Royal INSTITUTION, at 3.-Electrical Properties of Radio-active SebHydrolysis of the hepatic glycogen produced by the injection stances : Prof. J. J. Thomson, F.R.S. of amylase into the portal vein : M. Pariset.—On the stimulation of the nerves by very short electric waves : Louis

CONTENTS.

PAGE Lapicque.-The experimental reproduction of leprosy in A Text-book of Electromagnetism. By G. F. C. the ape : Charles Nicolle.—The geology of the Pyrenees of Searle Haute-Garonne and Ariège : Léon Bertrand.-On the Astronomical Lectures at Chicago. By w. E. P. Amana meteorites : G. D. Hinrichs.-The cave lions :

Zoological Results Marcellin Boule.

Our Book Sbelf :

Colgan: “Flora of the County Dublin"
DIARY OF SOCIETIES.

Cole : Exercises in Practical Physiological Chem-
THURSDAY, MARCH 2.

istry ; "Lacey and Pannett : “ Practical Exercises in ROYAL SOCIETY, at 4.30.-Further Researches on the Temperature Classi. Chemical Physiology and Histology."—W. D. H. . 412

fication of Stars. No. 2: Sir Norman Lockyer, K.C.E., F.R.S. -On the Radio.active Minerals : Hon. R. J. Strutt.-Atmospheric Electricity

Macfarlane: " Laboratory Notes on Practical Metal. in High Latitudes : Simpson.--On the Spectrum of Silicon, with

lurgy : being a Graduated Series of Exercises" . 413 a Note on the Spectrum of Fluorine : J. Lunt. On the Electric Resist- Martignat: "Le Liège. Ses produits et ses sousance to the Motion of a Charged Sphere in Free Space or in a Field of produits' Force : G. W. Walker.

Letters to the Editor
ROYAL INSTITUTION, at 5.-Recent Astronomical Progress : Prof. H. H.
Turner, F.R.S.

Charge carried by the a Rays from Radium.-Prof. CHEMICAL SOCIETY, at 8.- The Latent Heat of Evaporation of Benzene

E. Rutherford, F.R.S. and some other Compounds: J. Campbell Brown.- The Relation between Compulsory Greek at Cambridge.--x.; Prof. A. G. Natural and Synthetic Glycerylphosphoric Acids: F. B. Power and F. Tutin.-- The Reduction of Isophthalic Acid : W. H. Perkin, jun., and

Tansley ; Edward T. Dixon . S. S. Pickles.-Tbe Transmutation of Geometrical Isomers: A. W.

A Large Indian Sea-Perch.- Major A. Alcock, Stewart

F.RS

415 RÖNTGEN Society, at 8.15.--A discussion on "The Necessity of Accurate

Attractions of Teneriffe.--Hugh Richardson Measurement in X-ray and High Frequency Work,” opened by Dr.

415 W. D. Butcher.

Samuel Pepys and the Royal Society. By Sir CIVIL AND MECHANICAL ENGINEERS' Society, at 8.-Engineering Expert Arch. Geikie, F.R.S.

413 Evidence : J. F. Reade.

Compulsory Greek at Cambridge LINNEAN Society, at 8.- Zoological Nomenclature; International Rules and Others (to be followed by a discussion): Rev. T. R. R. Stebbing,

Folk Tales of Plains Indians. (Illustrated.) F.R.S. - Biscayan Plankton. Part IV. The Thaliacea : Dr. G. Herbert

A. C. H. Fowler.

A Naturalist's Journal. (Illustrated.) By R. L. INSTITUTION OF ELECTRICAL ENGINEERS, at 8.-Type-setting by Tele.

Prof. G. B. Howes, F.R.S. By W. N. P. graph: D. Murray. FRIDAY, MARCH 3.

Notes ROVAL INSTITUTION, at 9.- Receni Advances in Wireless Telegraphy:

Our Astronomical Column :-
Chev. G. Marconi.

Astronomical Occurrences in March
GEOLOGISTS' ASSOCIATION. at 8.- The Diamond Mines of South Africa :
Prof. H. A. Miers, F.R.S.

Reported Discovery of a Seventh Satellite to Jupiter . 4:
SATURDAY, MARCH 4.

Planetary Tides in the Solar Atmosphere.
ROYAL INSTITUTION, at 3. --Archæology: D. G. Hogarth.

The Bruce Photographic Telescope
MONDAY, MARCH 6.
SOCIETY OF ARTS, at 8.- Internal Combustion Engines: Dugald Clerk.

Physical Conditions of the Planeis
SOCIETY OF CHEMICAL INDUSTRY, at 8.-Mechanics of Fire : Prof. H.

Discussion of Central European Longitudes
E. Armstrong, F.R.S.-On the Estimation of Arsenic in Fuels-A The Scottish National Antarctic Expedition. Ilkes-

Shortened Method : Dr. G. McGowan and R. B. Floris.
VICTORIA INSTITUTE, at 4:30.- Geological Exterminations: Dr. C. B.

trated.) By J. H. Harvey Pirie and R. N. Rudmose Warriog.

Brown
FARADAY SOCIETY, at 7.50.-Annual general meeting.--At 8.15.- Recent The Early History of Seed-bearing Plants, as

Developments in Electric Smelling in Connection with Iron and Steel : Recorded in the Carboniferous Flora, Dr. D. H.
F, W. Harbord.
TUESDAY, MARCH 7.

Scott, F.R.S.
ROVAL INSTITUTION, at 5.--Some Recent Biometric Studies : Prof. K.

Forestry in the United States. (Illustrated) Pearson, F.R.S.

Progressive Buddhism ZOOLOGICAL SOCIETY, at 8.30.

University and Educational Intelligence INSTITUTION OF ICIVIL ENGINEERS, at 8. ---Surface-Condensing Plants, and the Value of the Vacuuin produced: R. W. Allen. (Continuation of

Societies and Academies Diskussion.)

Diary of Societies

By

ADAM HILGER,

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Special and Experimental Optical Work a Speciality. 75a CAMDEN ROAD, LONDON, N.W. Auarded Gold Medal St. Louis Exhibition, 1904.

Telegraphic Address :—" Sphericity, London." CATALOGUE ("A") OF SPECTROSCOPES AND SPECTROSCOPIC ACCESSORIES GRATIS.

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MACMILLAN & CO.'S NEW BOOKS . LANDSCAPE IN HISTORY & OTHER ESSAYS.

By Sir ARCHIBALD GEIKIE, D.C.L., F.R.S.

8vo. 88. 6d, net. CONTENTS. - Landscape in History-Landscape and the Imagination- Landscape and Literature — The Origin of the Scenery of the British Isles—The Centenary of Hutton's Theory of the Earth-Geological Time - The Life and Letters Charles Darwin-Hugh Miller : His Work and Influence-Science in Education, The Roman Campagna.

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