REVIEWS AND EXCHANGES 197 
of science that the number of species recorded for our island is “ considerably in 
excess of that recorded for any other European countiy.” 
The Conimoit Spitlers of the United States. Hy James II. Emerton. Ginn and 
Co. 1*1 ice 6s. 6d. net. 
.\rachnology cannot be c.alled a papular branch of zoology, though it has 
apparently more adherents in America than with us; and we are afiaid that in 
its present form Mr. Emerton’s book is hardly calculated to make it more so. 
.Spiders belong to many distinct Orders, ten being represented in the United 
States, whil't the genera are far more numerous, though many of them are 
monotypic, at least within Mr. Emerton’s area. The author has provided over 
five hundred excellent figures, those of the webs Ireing very beautlfid ; but when 
he writes, “ If information is sought about an unknown spider, the i lustrations 
. . . furnivh the most convenient index, as the general form and proportions 
of spiders and the arrangement of their eyes usually show to what family they 
belong,'’ we venture to think that this suggested method of identification will 
prove as unreliable as it is curnltersome and unscientific. The introdirction would 
gain by expansion, and should have been followed by something by way of a 
diagnostic table or summary. 
Animal Forms : a Second Book of Zoology. By Drs. David S. Jordan and Harold 
Heath. Ilirschfcld Bros. Brice 6s net. 
True to the modern American method <>f biological teaching, by which ecology 
precedes anatonry, Dts. Jordan and Heath firllow up the excellent “Animal Ltfe,” 
written by the former in conjunction with Mr. Kellogg, with a companion volume 
treating ihe anrmal world from the anatomical point of view. A ch.apter on cells 
and protoplasm is followed by others dealing in succession with the Protr zoa, 
Sponges, Coelenterates, Worms, Molluscs, Arthropods, Echinodttms, Chordales, 
Fishes, Arttphibiatts, Reptiles, Birds and Mammals. The wide drfferences between 
flat-worms, rourrd-worms and segmented worms are duly noticed in a table of 
classification at the end of the work, while rotifers, polyzoa, brachiopods and 
nemertines are cautiously treated as “animals of uncertain rebuionships.” A 
hundred and forty illustrations, mostly excellent, render the volume one which — 
with its Companion work — we can heartily recommend not so much for the student 
of University standing as for the upper classes in our schools. 
Life and Health : a Text-book of Physiology for High Schools, Accuiemies and 
Normal Schools. By Albert F. Blaisdell, M.D. Ginn and Co. Price 
4s 6(1. 
This seems to us as near perfection as we can often get in this sublunary- 
sphere. A simply-worded account of the structure and functions of the human 
body, with distinct reference to the practical questions of the maintenance of 
health, fir-t aid to the injured, and the care of the sick room, illustrated by 
numerous simple experiments, a sufficiency of diagrams and a copious glossary, 
we can suggest nothing to be added or subtracted. We are glad to see that in the 
appendix addre'sed to the teacher Dr. Blaisdell writes : “There should be no 
question at all concerning vivisection. In no shape or form should it be alloived in 
any gra te of our schools.” 
A Handbook of British Butterflies, being an Outline of the Distribution of all the 
British Butterflies, together with their Food Plants, Times of Appearance, 
and Favourite Places of Resort. By J. R. Charuley, F. E.S. Simpkin, 
Marshall and Co. Piice 6d. 
This little pocket-boi k is interleaved for notes, but it contains no descriptions 
to enable the young collector to identify his finds. It might be useful for the 
student to add these from personal study and observation. 
A Glossary of Popular, Loral and Old fashioned Names of British Birds. By 
Chailes Louis Hett. Henry Sotheran and Co. Price is. 
This is a revised edition of the glossary appended to the writer’s “ Dictionary 
of Biid Notes,” but the number of names is now more than double those in the 
list published in 1898, so that it now reaches nearly S,ooo, or an average of 
