1898] SOME NEW BOOKS 53 
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 by 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 Amphioxus, Mollusca, 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, on 
the cell theory, on types of structure, on glacier ice, on the problem 
of individuality, descriptions of new species, a cyclopaedia article on 
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 SrupEnt’s Text-Boox or ZooLocy. By Adam Sedgwick. Vol. i. 8vo, pp. xii+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, 
