REVIEWS AND EXCHANGES 
21 7 
Frog’s Spawn and Tadpoles. 
(From “ Every Boy’s Book of Natural History,” by courtesy of the Religious 
Tract Society.) 
Every Boy's Book oj British Natural History. By Percival Westell. With 
chapters on Nature-photography and 109 original illustrations by the Rev. S. 
N. Sedgwick, M.A., and an Introduction by Lord Avebury. Religious Tract 
Society. Price 3s. 6d. 
Mr. Westell is now well-known as a popular writer and lecturer on Natural 
History, and boys have for generations delighted in such books as this, giving 
much information about living things in simple language, and with plenty of such 
excellent pictures as that of frog’s-spawn, which we are permitted to reproduce 
