NOTICES OF NEW BOOKS. 397 



spirit of zoology is not neglected, and that the results of a truly 

 scientific expedition like this one will be remembered when many 

 highly boomed excursions, promoted by wealth and designed for 

 sport, will have been mercifully forgotten. 



In this part Dr. Willey gives an interesting personal narra- 

 tive of his travels, and a special contribution on the subject 

 which was the primary object of the expedition. The Pearly 

 Nautilus is of consummate interest to zoologists. It constitutes 

 one of the "persistent types" that has travelled on practically 

 unchanged from pre-tertiary ages ; it possesses an earthly — or 

 marine — tabernacle, perfected probably before the evolution of 

 our own ; and of its complete embryonic development we are 

 even now not fully informed. But Dr. Willey has brought this 

 subject within measurable distance of a final determination, and 

 has written the memoir on this animal which is the last for 

 present consultation. As regards the morphology of the structure 

 of Nautilus, our author inclines to an epipodial theory ; but here 

 our function terminates, and we must refer the reader to the 

 Memoir itself, which is embellished with nine beautiful plates, 

 beside other textual illustrations. 



Our Country's Fishes, and how to knoiv them ; a Guide to all the 

 Fishes of Great Britain. By W. J. Gordon. Simpkin, 

 Marshall, Hamilton, Kent & Co., Limited. 

 Those to whom the volumes of Couch, Yarrell, and Day are 

 inaccessible, and who are desirous of a cheap guide to the discrimi- 

 nation of British Fishes, will find this volume a boon. Of course 

 it is a compilation, and made by one who will probably not 

 claim to be a specialist on the subject ; but if its aim is clearly 

 understood, and its fignres rather than its text be its principal 

 recognition, then the publication will supply a want, and should 

 ensure a very considerable circulation. The plates also are a 

 distinct improvement on those in other publications of the 

 series, and in some instances are successful in portraying the 

 difficult colour-markings of fishes. In Chapter IX., " Genera 

 and Species," will be found a considerable collection of bio- 

 nomical and other facts, but we wish that space would have 

 allowed of reference being made to the sources from which they 



