REVIEWS AND EXCHANGES 
29 
perfectly lucid. The volume is illustrated by two coloured diagrams of circu- 
latory systems, and by a hundred other anatomical drawings, and it has a 
sufficient index. In any subsequent edition, however, we would suggest that a 
glo-ssary of terms might well be added. 
Caterpillar of Privet Hawk Moth. 
Photography for Naturalists. By Douglas English. Iliffe and Sons. Price 5s. 
This is essentially a practical handbook, dealing with the apparatus and pro- 
cedure in photographing animals of all kinds under control, as distinguished from 
