28 THE NATUEAL HISTORY REVIEW. 



bearing ; for normally developed fishes feed little during tlie time of 

 propagation, and consequently are lean and unfit for the table im- 

 mediately afterwards, whilst a sterile individual continues to feed, 

 and therefore remains in season throughout the year. 



A systematic index with short diagnoses, and three synoptical 

 tables showing the horizontal and vertical geographical distribution 

 of the eighty species described, and their spawning seasons, conclude 

 a work which has done a great deal to expiate the sins of its prede- 

 cessors, and which we particularly recommend to the Ichthyologists 

 of this country — not to be copied from, but to be imitated. 



Y.— Huxley atjd Hawkins' Osteological Atlas. 



An Elementary Atlas or Comparative Osteology. By Pro- 

 fessor Huxley, P.E.S. and B. Waterhouse Hawkins. "Williams 

 and Norgate, 1864. 



The object of this work, as stated in the introductory note, is to 

 aid students in comprehending the general arrangement, and some 

 of the most important modifications of the bony framework of the 

 Yertebrata. The drawings are executed by Mr. "Waterhouse 

 Hawkins : the very important task of selecting, arranging, and 

 naming the parts of the objects figured is Professor Huxley's share 

 in the work. 



There are twelve plates, folio size, drawn on stone, containing 

 on the average about twenty figures in each plate. The first shows the 

 structure of the skull of four of our commonest domestic animals, 

 belonging to as many diff"erent orders of mammals — viz., the dog, 

 pig, horse, and sheep, illustrated by views of the upper, imder and 

 lateral surface, as well as by a median longitudinal vertical section. 

 Comparison of the different objects both in this plate and in most of 

 the others in the work is greatly facilitated by the figures being all 

 drawn of the same absolute size, and also by the names of the 

 diff'erent elements being marked on the plate, so that no turning-over- 

 pages to refer to a description is required. The second plate shows 

 in the same manner the most characteristic differences between the 

 skull of man, and of the several species of apes, both of the Old and 

 New World. In the third and fourth plates are figured the crania 

 of some of the lower mammals, of birds and of reptiles ; the fifth is 



