no 



SCIENCE. 



[Vol. XVIII. No. 446 



the cortical cells are derived from the peritoneal epithelium, as 

 stated by Janosik ; and the medullary substance from the sympa- 

 thetic elements, as described by Professor Mitsukuri. 



In these vaiious memoirs the authors express their indebtedness 

 to Professors Mitsukuri, lijima, and Yatabe for aid and advice. 

 The plates are marvels of beautiful lithography, and the dravrings 

 are made with that skill and accuracy vchich characterize all 

 their work. 



Taxidermy and Zoological Collecting. By William T. Horna- 

 DAT. New York, Scribner. 8°. $3.50. 



Who the author of this work is, is certainly well known to 

 most of the readers of Science. For years he has been connected 

 with the National Museum as the chief taxidermist, and for a long 

 time previously he was the taxidermist of a prominent natural 

 science establishment. So it is with regret that we learn that Mr. 

 Hornaday is to retire entirely from taxidermy forever. But asso- 

 ciated with the chief author of the book was Dr. W. J. Holland, 

 who supplied the chapters on collecting and preserving insects. 



The considerable popular interest in zoology, and the great num- 

 bers of young naturalists coming forward, give reason to suppose 

 that the book will meet with a considerable demand, especially as 

 there is no other book of equal scope available. 



The author urges on those who care for the preservation of spe- 

 cimens of many forms of animal life that they must be up and do- 

 ing. It is already too late to collect wild specimens of the Ameri- 

 can bison, California elephant seal, West Indian seal, great auk. 



and Labrador duck. Very soon it will be impossible to find wal- 

 rus, manatee, fur seal, prong-horn antelope, elk, moose, mountain 

 sheep, and mountain goat. Then ducks are being rapidly exter- 

 minated for market, and numerous birds for the sake of fashion. 



The first part of the book is on collecting and preserving. This 

 is by no means an unimportant part of the whole, occupying 

 nearly one hundred pages, and covers every part of the work of 

 collecting zoological specimens, even to birds' eggs and nests. 



Taxidermy is treated in the second part, which occupies one 

 hundred and fifty pages. This opens with an account of the 

 worker's laboratory, and closes with hints as to the most effective 

 ways of " making up " the finished specimen, for they must resort 

 to paint as well as some other faded beauties. 



There are then a number of pages devoted to the making of 

 plaster casts. This makes the (hird part of the book, which is 

 followed by the part (IV.) devoted to osteology, or at least so much 

 of it as can be applied in the collecting and mounting of skeletons. 



The closing chapters are on insect collecting, by Dr. Holland. 

 The book is liberally illustrated, credit being given by the author 

 to Mr. Frederick A. Lucas for much assistance in this feature. 



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 for the Advancement of Science," by Marcus Benjamin; "What 



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