NOTICES OF NEW BOOKS. 399 



South African Chamseleon (Chamceleo pumilus), which she has 

 several times bred; the young, it seems, have a curious habit of eat- 

 ing bits of their cast skins, and have little power of colour-change. 

 There are other interesting notes which space forbids us to 

 mention, and very numerous illustrations, most of them to our 

 thinking rather unnecessary ; but the Duchess of Bedford's 

 photograph of a Mule between a Gravy's Zebra stallion and 

 a large Spanish Ass (also shown) is of great interest, indicating 

 this hybrid to be well striped, whereas a hybrid between the 

 Somali Ass (a race of Equus asinus) and a mare of the Mountain 

 Zebra bred at the Zoo is nearly devoid of stripes except on the 

 legs and shoulders. 



Typical Flies. By E. K. Peakce. Cambridge University Press. 



1915. 5s. net. 

 This is a photographic atlas of typical Diptera, including the 

 Aphaniptera or Fleas. The photographs are admirably clear 

 and have useful short notes under them. The preface contains 

 practical hints on collecting and preservation, and Brauer's 

 classification of the order is also given. The work should be of 

 great value to those beginning the study of this important and 

 difficult group of insects. 



Mind in Animals. By E. M. Smith. Cambridge University 

 Press. 1915. 3s. net. 

 This manual deals with the various manifestations of animal 

 intelligence and instinct, from the simple reactions of the Protozoa 

 to the complex minds of such high mammals as Monkeys. 

 There are special chapters on Instinct, Homing, Imitation, and 

 other topics, and much valuable information is given. Some of 

 the methods by which experimenters have sought to gauge 

 animal intelligence seem to us not very creditable to their own ; 

 we do not see that much is gained by testing the abilities of 

 animals to find their way out of absolutely unnatural diffi- 

 culties as models of the Hampton Court Maze, the original 

 being admittedly a poser for many human beings, and we quite 

 agree with the author's criticism of the puzzle-box method of 

 research, in which a hungry animal is shut up and forced to find 

 a way out of its prison, such as by lifting a latch, before getting 

 at food. "The hungry animal," it is rightly said, "in close 



