beonn's animal kingdom. 851 



total of two hundred and thirty-eiglit illustrations, of which one 

 hundred and five are by Dr. Cobbold himself. Mr. Busk is the 

 contributor next in importance. The remaining figures are taken 

 from a large selection of authors. 



The volume is brought to a conclusion by a long bibliographical 

 catalogue, extending to sixty pages. This is entirely devoted to 

 English works and papers, or to translations in the English language 

 of foreign memoirs on the Entozoa. It has been Dr. Cobbold's 

 object " to do for British and American authors what Davaine has 

 done for foreign writers." These two lists, together with that of 

 J. y. Carus and Engelmann in the Bibliotbeca Zoologica, and the 

 Eeports furnished by Leuckart to "Wiegmann's Archives, afford the 

 fullest and most copious reference to the extant literature of Hel- 

 minthology. Let not the magnitude of the subject deter students 

 from entering so rich a field. Here, as in other departments of 

 zoology, the capital w^orks are not too numerous, or too often read. 

 For human Helminthology alone, the treatises of Davaine and 

 Kiichenmeister, together with the little tractate of Weinland, will 

 be found a sufficient addition to those which we have named at the 

 head of the present article. If restricted to a single book, the 

 student cannot do better than choose that of Leuckart, but, if 

 ignorant of German, let him by all means purchase the useful mono- 

 graph of Dr. Cobbold. 



XXIX. — Beonn's Animal Kingdom. 

 Die Klassen und Oednungen des Thiee-eeichs, tvissenschaet- 

 LiCH daegestellt IN "WoET UND BiLD. Von Dr. H. G. Bronn : 

 fortgesetzt von Dr. W. Keferstein. Leipzig und Heidelberg: 

 1860—1865, 8vo. vols, i.— iii. 



It is perhaps hardly fair to institute a comparison between the great 

 work on the Classes and Orders of the Animal Kingdom, designed 

 and partially executed by the distinguished Palaeontologist of Heidel- 

 berg, Professor Bronn, and the Handbook of Zoology, of which we 

 noticed the appearance in a recent number. The latter is intended 

 only as a Manual of Zoology — a work for students, to contain as much 

 information as possible in a small space, — the former, destined 

 apparently to an almost unlimited extension, may be regarded as a 

 nearly exhaustive Textbook of Zoological Science. Nevertheless, the 



