OF COMPARATIVE ANATOMY. 25 



naturalists — as^ Pallas, Bloch, Goeze, and Werner — 

 whom I have already mentioned to you. The same subject 

 has been again surveyed in all its parts, and has received 

 many new illustrations from Professor Rudolphi of Berlin; 

 whose Enfozoorum Hisioria, or History of Internal Worms, 

 besides much original matter, contains a complete collec- 

 tion of all that has been done on the subject, and an ar- 

 rangement of the genera and species, which is now univer- 

 sally followed : it is indeed deservedly considered the first 

 authority on this subject. 



TiLEsius, a German naturalist, who accompanied a late 

 Russian voyage round the world, has delineated numerous 

 animals, particularly of the marine kinds, in the Atlas of 

 Krusenstern's Voyage*. 



Dr. Spix, a Bavarian, has published a folio work f on 

 the comparative osteology of the head, containing numer- 

 ous plates, which are a good specimen of the new art of 

 lithography, or stone-engraving. 



Professor Tiedemann, of Landshut, gained a prize offered 

 by the French Institute for the best account of the organs 

 of circulation in the echinodermata ; and has just published 

 his Essay J, in folio, with several fine engravings, repre- 

 senting the whole anatomy of the holothuria, asterias, and 

 echinus. This book (probably the only copy in the country), 

 and the work of Spix, are in the library of the Medical and 

 Chirurgical Society. Many other publications in the vari- 

 ous departments of zoology have appeared in Germany in 

 the course of the past year. 



We may form some judgment of the taste for these pur- 

 suits, which exists in other countries, from the fact that 

 Blumenbach's Manual of Natural History has gone 

 through nine editions. It is indeed remarkable for its clear 

 arrangement, and for the immense quantity of interesting 



* Reise urn die Welt. Petersburgh. 



f Cephalo genesis^ sive capitis Ossei Struetura. Munich. 



:|: Anatomie der RohreU'Holothurie^ dcs Pomerauz-farbenen See-sterns, 

 und des steinernen See-igels : folio, Landshut, 1816; with ten beautiful 

 and expressive engravings. 



