1S98] SOME NEW BOOKS 5.3 



fructification of ideas. To take but a single example, it is of interest 

 to read Huxley's expression of his views in 1855 as to the progressive 

 development of animal life in time, and to contrast it with the views 

 expressed l>y him thirty or forty years later, after he had been brought 

 into almost daily contact with the concrete facts of palaeontology. 

 Over and over again throughout the present volume, the first in a set 

 of four, we see the agnostic spirit in which Huxley approached every 

 problem and every statement by authority, such, for instance, as the 

 teleological view of anatomical correlation enunciated by Cuvier. 



Further, as one turns over these handsome pages, one cannot but 

 remark on the diversity of subjects therein discussed. We find 

 articles dealing with AmpJiioxus, Mollusea, Hydrozoa, Tunicata, 

 echinoderms, Rotifera, parasitic and other worms, Brachiopoda, Pro- 

 tozoa, Crustacea, Bryozoa, human anatomy, fossil fish, fossil reptiles, 

 and, incidentally, other groups of animals; or, taking the subject- 

 matter from another stand-point, we find articles on histology, on 

 general anatomy, on classification, on palaeontology, on embryology, < in 

 the cell theory, on types of structure, on glacier ice, on the problem 

 of individuality, descriptions of new species, a cyclopaedia article <>n 

 tegumentary organs, and a Croonian lecture on the vertebrate skull. 

 All this was written before Huxley had reached the age of thirty-five. 

 Is there any biologist now living who, when he was thirty-five, had 

 produced work so considerable in bulk, so varied in its scope, and 

 withal so searching and profound ? 



The editors and publishers have done their work well. The 

 original place of publication, with sufficiently full bibliographical 

 details, is quoted for each of the fifty articles herein contained. The 

 reprinting, so far as we have tested it, appears to be exact, even down 

 to the absurdly small type which happened to be used for certain 

 catalogue numbers in a paper originally published by the Geological 

 Society. The plates appear to have been re-lithographed, since they 

 are not perfectly absolute facsimiles. They bear consecutive numbers, 

 placed within square brackets, and each also has the number which it 

 bore when originally published. The name of the original artist has 

 been reproduced, as a rule, but has been accidentally omitted in one 

 or two cases. In a few cases also, the reference number to the page 

 which the plate is intended to face is incorrect. The name of the 

 artist, engraver, or lithographer, who has reproduced the plates, does 

 not appear to be mentioned. We note, however, that it is to Messrs 

 Walker and Boutall that we are indebted for an excellent photogravure 

 of the same photograph of Huxley as that reproduced in Natural Science 

 for August 1895 (vol. vii., plate xviii.). The volume has been excellently 

 printed by Messrs Richard Clay & Sons. We note that the publishers 

 have undertaken all the financial responsibilities of this republication, 

 and we hardly think they will have any occasion to regret their generosity. 

 To them and the editors we offer our congratulations and thanks. 



Sedgwick's Text-Book of Zoology 



A Student's Text-Book of Zoology. By Adam Sedgwick. Vol. i. 8vo, pp. xii -f 620. 

 London : S. Sonnenschein & Co. 1898. Price, 18s. 



Of late years the English student has had to rely for his guidance in 

 the study of zoology almost entirely on translations of foreign works, 



