Scientific Intelligence^^New Publications. 207 



portant discoveries of the circulation of the blood in different 

 orders of insects. His present elementary work contains a com- 

 prehensive sketch of the actual state of the science, and the ma- 

 terials are arranged according to new and peculiar views. In 

 place of commencing with the most complex animals, and exa- 

 mining their structure in a descending series, as is usually done, 

 he has traced the gradual and successive developement of the 

 different organs of the body, from their first and simplest ap- 

 pearance in the lower classes, to their most complex and perfect 

 forms in the higher orders of animals. By keeping constantly 

 in view the functions of animals, and the modifications which 

 entire systems of organs present in the different classes, he has 

 rendered this work a highly interesting and useful introduction 

 to comparative physiology. The treatise commences with a me- 

 thodical list of the principal works and memoirs which have 

 appeared on this subject up to the present time ; and although 

 the limits of this compilation have prevented the author from tra- 

 cing the progress of discovery in any department of the science, 

 the deficiency of his references is amply supplied by the nume- 

 rous notes and extracts of his judicious and intelligent transla- 

 tor. Mr Gore, who is likewise the translator of Blumenbach's 

 Natural History, has added to his translation of Cams copious 

 extracts from the works of Rudolphi, Meckel, Teidemann, 

 Blumenbach, Reil, Weber, Spix, Camper, Soemmering, Geof- 

 froy, Desmoulins, Cuvier, De Serres, Blainville, Home, and al- 

 most every other continental or British authority, which render 

 it greatly superior to the original as a work of reference. The 

 accompanying plates contain 330 figures, which are executed on 

 a small scale, to adapt them for more general circulation. Two 

 hundred of these figures were drawn by Carus from nature ; 

 the rest are selected from Trembley, Cavohni, Spix, Gaede, 

 Teidemann, Cuvier, Swammerdam, Scarpa, Rudolphi, Rosen- 

 thal, Herold, Treviranus, Geoffroy, Arsaky, Meyer, Mery, 

 Emmert, Nitzsch, Blumenbach, Daubenton, Fisher, Albers, 

 Kieser, Wolff, Hunter, Home, Macartney, and Carlisle. In 

 the table of classification, and throughout the wqrk, Professor 

 Carus has adopted a new arrangement of the animal kingdom, 

 modified from the Rcgne Animal of Cuvier, by the author's 

 own researches concerning the structure of insects. From the 



