444 BE VIEWS. 



scholtz (1829), De Blainville (1830-4), Oken (1835), Brandt (1833), 

 Lesson (1843), Forbes (1848), Lutken (1850), Yogt (1851), Kolli- 

 ker (1853), Leuckart (1854), Gegenbaur (1856-9), McCrady (1858), 

 and Huxley (1859), for the arrangement of these animals and their 

 sub-divisions. Here, as in other parts of the work, the care taken 

 by Professor Agassiz to master the very extensive bibliography of 

 his subject has produced results calculated, in some measure, to 

 diminish the necessity for the repetition of the same labour on the 

 part of future investigators. 



The beautiful plates which served to illustrate Professor Agassiz's 

 former memoirs on the North American Acalephae,* must be in the 

 memory of some of our readers. Those which accompany the present 

 volume, twenty-six in number, are issued in a style no less worthy of 

 imitation, and, with scarcely an exception, by the same artist, Mr. 

 Sonrel. He, also, as we are informed in the preface, executed directly 

 from nature most of the preliminary drawings, in some cases receiving 

 the assistance of Professor H. J. Clark, who has, in addition, enriched 

 the text with some special contributions of his own, which much 

 enhance its value. A number of outline cuts are interspersed 

 throughout the body of the volume. Of the twenty-six plates, three 

 only, those on the Ctenophora, have particular reference to the 

 subject-matter of the third volume; an inconvenient arrangement, 

 whereby the reader who desires to consult future sections of the same 

 Monograph must, of necessity, have this volume lying open before 

 him. We doubt not that it has arisen from a praiseworthy desire on 

 the part of Professor Agassiz and his publishers to justify, by their 

 liberality, the cordial support which the work has received from its 

 American subscribers. Trusting that an early opportunity may be 

 afforded us of noticing the fourth volume of these ' Contributions,' we 

 now bring to a conclusion our notice of the third. Whatever comes 

 from the pen of Professor Agassiz shall receive our welcome and 

 attentive perusal. And if, at times, we venture to diner from his 

 conclusions, may we do so with all simplicity and good faith, in the 

 free spirit of that science which he has cultivated with so much zeal. 

 Truly the very shortcomings of a writer possessing his honesty and 

 ability may bear comparison with the excellencies of ordinary men. 



* In Trans. Amcr. Acad. 1849. 





