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A

SANGER - SHEPHERD

COLOUR OUTFIT

makes an acceptable CHRISTMAS GIFT.

ON SALE Second-band Astronomical Telescopes, 4" for £21, 3}" for £12, flyr £9, 3" for £3 10s., all complete, stand and eyepieces. - Prismatic Binocular Field Glass (best make) for £5, magnification 9, sold elsewhere LA - Microscopes : POWELL & LEALAND complete with mechanical asel alety stage, Polariscope and following objectives, all by P. and L., 2", "!".1.1.1". 1e", offered £14, cost over four times this amount. Swift's Best Presentation Binocular, mechanical stage, graduated

Aary stage, with Swift's complete substage and condensers, 5 eyepieces and 3 objectives, offered £12, cost £42.-Cotton Spinners' Microscope siered for 15s. Many others from £2 10s. upwards.-Magnificent Chemical Balance, cost £18, offered for £6 10s.- Entomological Cabinet, having 54 drawers in two liers, corked and glazed, £8 15s. Several Smaller Cabinets.- Microscope Slides on approval at 4s. per dos, or my selection so for 12s.

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Over 20,000 in Stock (As supplied to the Principal Universities, Technical Schools, &c.)

Send for Catalogues to the actual preparers.

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LABORATORIES: 16 & 18 CHURCH ROAD, LONGSICHT, M/C.
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LANTERNS, MICROSCOPES, NATURE STUDY appliances, &c. PHOTO MICROGRAPHIC APPARATUS. LEACH'S

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Correspondence invited

To ensure prompt delivery Orders

should be booked at once.

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SECOND-HAND TELESCOPES. In. ALVAN CLARK, with Slow Motions, £50 ; 34 in. STEWARD. with Slow Motions, cost 460, £25; 91 in. CALVER, Equatorial with Clock,

Universal Mount, Mirror by With £45.

List, including many others, on application. SECOND-HAND MICROSCOPES. WATSOY's Edinburgh H., £16; SWIFT's Bacteriological, £13 10s. ; COLLINS' Binocular, £10; LEITZ' II B, with Mechanical Stage, £8 10s.

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HIGHEST CLASS
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SELF-RECORDING BAROGRAPH, NOTICE IS HEREBY GIVEN that an EXAMINATION will be

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OPTICAL WORKS, 20, 1904.

N.B.-I/ obtained

142 ST. JOHN ST., W. H. PENDLEBURY, M.A., Shirehall, Shrewsbury, Secretary for Higher Education.

indirectly, see that

LONDON, E.C. November 28, 1904.

every instrument

Manufacturers of STAN bears our name. ABSOLUTE

DARD METEOROLOThere are inferior

GICAL INSTRUMENTS STAFFORDSHIRE COUNTY COUNCIL.

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of all kinds-with Kew market.

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SCIENCE APPLIED TO POTTERY. WANTED, a PHYSICAL SCIENTIST with first-class University 57 EDGWARE ROAD, LONDON, W., qualifications in Chemistry as Instructor to the County Pottery Classes in North Staffordshire. Salary. 6350 per annum (with prospects of future

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AND PHYSICAL
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BY STANDARD MAKERS, IN PERFECT WORKING ORDER, AT

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Apparatus for estimation of sulphur in spent oxide.

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BY

Importers, Manufacturers, and Dealers in
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use.

Price, according to quantity of Radium, will be quoted

by return post.

We make a special feature of CHEMICALS Illustrated Microscopical

AND APPARATUS of all kinds. Catalogue, 3 Stamps, to

PRICE LIST FREE. cover postage.

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10 NEW CAVENDISH ST., LONDON, W. GLEW'S SCINTILLOSCOPE

Protection from X-Ray Burns.
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X-RAY SHIELD.
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(PATENT APPLIED FOR ) SCREEN

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The eye sees an inexhaustible shower of stars of PUICH BLENDE white light, giving a very realistic idea of the ceaseless

activity of these marvellous substances which are producing the terrific bombardment causing this beautiful display.

See NATURE, September 29, page 535.
Glew's Scintilloscope Superior Lens, with Extra-sensitive Pitchblende and

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Nlustrated E. HARRISON GLEW, Radiographer (Silver Medallist, Paris, 1900),

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In Five Volumes. Large 8vo. Sold Separately.
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THE NEW "STUDENT'S"
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This Instrument has been designed to meet the re
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Ir Nature says :-"Provides an accurate instre ment at a moderate cost."

FULL SIZE STANDARD BAROMETER of same design, bore 0'5" diameter, incbes and millimetre scales, verniers reading to o‘002 inch and o'r m/m, on polished mahogany board with brackets and opal glass reflectors, £7 10 0 Sole Manufacturers and Proprietors of the

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the Sorbonne.

THURSDAY, DECEMBER 8, 1904.

to acquire a full knowledge of the grey seal alone, and that the best part of five years has been spent on the

task in general. THE MILLAIS BRITISH MAMMALS.

The present volume contains the preface and intro

duction to the entire work, together with the text and The Vammals of Great Britain and Ireland. By J. G.

illustrations relating to the orders Chiroptera, InsectMillais. Vol. i. Pp. xx+ 363 ; illustrated. (Lon

ivora, and Carnivora exclusive of the Mustelidæ. The don: Longmans, Green and Co., 1904.) Price relegation of the latter to the second volume is rather 6 guineas net.

a pity, as it involves the intercalation of the seals and IN Sino important features this magnificent work,

walruses between the bears and the weasels, which of which the first volume is now before us, may somewhat mars the systematic arrangement. The las claim to special preeminence. First, the illus-author states, however, that he found it impossible to trations, alike in number, size, truthfulness to nature, complete his account of the Mustelidæ in time for it and artistic excellence, are unrivalled; and secondly, as to come in its proper place. regards the main and most important part of the sub- In his introduction the author takes a cursory survey jeri, namely, the habits and local distribution of the of the history of the British Islands during the prevarious species, the work is in no sense a compilation, historic and later Tertiary periods, and as he is not but the result of long and patient personal observation a professed palæontologist he may perhaps be allowed on the part of the author. Indeed, the only matter a little license here, especially as it does not affect the for regret connected with the work is that its price general subject of the work. The statement as to the puts it out of the reach of a large percentage of field occurrence of ungulates in the Cretaceous (perhaps due naturalists; bearing in mind, however, the style in to the author having been misled by a certain South which it is got up and the wealth of illustration, it is American writer) is, however, open to exception, while difficult to see how it could have been offered to the the alleged first appearance of marsupials and Insectpublic at an appreciably lower figure.

ivora at the same time is perhaps an

error in the As an author of a work like the present, Mr. Millais opposite direction. The assertion that many types of has one incomparable advantage over the great majority mammals have been but little altered since the (Lower) -if not, indeed, over all-of his fellow-naturalists in Eocene might also be modified. this country, namely, that he is a great painter. In While on the subject of errors, it may be mentioned this double capacity of artist and naturalist he is con- that the author (and quite justifiably) is very much sequently able to present the public not only with “ down” on other writers on British mammals for *squisite artistic pictures of the animals he describes, their various sins of omission and commissionbut also with portraits which emphasise and bring into whether trivial or otherwise. He must therefore prominence their special generic and specific character- take it in good part if similar slips of his own istics, It is, indeed, this judicious blending of the are brought to notice. For example, we fancy Sir artistic with the zoological aspect that confers on the Archibald Geikie will feel somewhat surprised to find coloured illustrations in this work such peculiar value. himself described as a distinguished palæontologist Too often in paintings of this description we find either and zoologist. Again, the initials of Dr. Smith Woodzoological details more or less completely sacrificed to ward are not A, B., neither is Dr. R. Ball (p. 238) the artistic effect or the former brought into undue designation of the late director of the Dublin Museum, prominence to the destruction of all that really while Hermann, and not Herman, is the proper desigartistic and pleasing. In hitting off the happy medium

In hitting off the happy medium nation of the author of the name Sorex vulgaris (p. between these extremes, Mr. Millais and the other two 141). Lack of classical knowledge seems to be implied artists who have assisted in the work have been re- in the translation of Chiroptera as hand-bearers" markably successful. In addition the coloured (p. 12). More serious is the discrepancy between the pictures, there are a number of sketches, and in some number of teeth in Rhinolophus as given in the text cases photographs, showing the various animals in (p. 23) and in the formula (p. 24), while another error characteristic attitudes, in pursuit of their prey, &c., of the same nature occurs on p. 143, where the number which illustrate their natural history almost without of premolars in the shrew is given as 2/4 instead the necessity for letter-press. Nor is this all, for there of 4/2. Exception may also be taken to the statement are several sketches illustrative of the mammalian life (p. 230) that bears, as a whole, are a more primitive of our island in prehistoric times; and although some type than dogs, and the fact that the plate of the walrus of the details of form and colour assigned to certain is lettered Trichechus rosmarus while the creature is of the extinct forms may be open to criticism, these described in the text as Odobaemus rosmarus is another certainly convey a good idea of the richness of this instance of want of care. launa as compared with that of the present day. No Reverting to the merits of the volume before us, illustrations are given in the text of either skulls or attention may be directed to the value of the work Ireth, which is perhaps somewhat to be regretted, as accomplished by Mr. Millais in regard to the bats. the latter receive mention in the text.

Although the distinctive features of the various British As regards the amount of time and labour the author representatives of the group can be gleaned by a has devoted to the work, it may be mentioned that, careful study of technical treatises, the nature of the according to a statement in the preface, he made four illustrations given in previous works British successive expeditions, during as many years, in order mammals rendered it very hard for the amateur (to say

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