S52 "Faiina Boredli- Americana, 



belong chiefly to the torrid zone, because there they attain 

 their greatest size as crocodiles. Most snakes are natives of 

 the torrid zone, but some species are spread throughout 

 Europe. Tortoises are peculiar to the warm parts of the 

 temperate zone. 



Fish, whether of land waters or the ocean, gradually 

 increase in number, size, appearance, and quickness, from the 

 cold to the torrid zones. Marine fish, by swimming under 

 the ice, approach nearer to the poles than any other animals, 

 or than plants. 



Insects are handsomest and largest in the torrid zone ; but 

 they are spread over every part of both hemispheres, and 

 winged insects sometimes pass beyond the snow line. 



Crabs and shellfish are met with in Greenland, and in the 

 southern hemisphere beyond 80°. How far they are diffused 

 in the intermediate space cannot be ascertained. 



Snails and worms of the land and of fresh water approach 

 near the snow line, and are most numerous in the temperate 

 zone. Mollusca and worms of the sea are most plentiful 

 within the tropics, where they attain the largest size ; but they 

 are also found in the snow line. Marine zoophytes, and 

 especially coral polypes, are peculiar to the seas between the 

 tropics, where the beds of coral in time become islands ; but 

 zoophytes are also found about Iceland and Greenland. 



Art. II. Catalogue of Works on Natural History, lately published, 

 with some Notice of those considered the most interesting to British 

 Naturalists, 



Britain. 



Fauna Boreali-Americana, or the Zoology of the Northern Parts of British 

 America ; containing Descriptions of the Objects of Natural History 

 collected on the late Northern Expeditions, under the Command of 

 Capt. Sir John Franklin, R.N. By John Richardson, M.D. F.R.S.F.L.S., 

 Member of the Wernerian Natural History Society of Edinburgh, and 

 Foreign Member of the Geographical Society of Paris, Surgeon and Na- 

 turalist to the Expeditions ; assisted by William Swainson, Esq. F.R.S. 

 F.L.S. &c., and the Rev. William Kirby, M.A.F.R.S. F.L.S. &c. Illus- 

 trated by numerous Plates. Published under the Authority of the Right 

 Hon. the Secretary of State for Colonial Affairs. London. Murray. 

 1829. pp. 500. 



The volume at present before us has been expected from its highly 

 talented author with the most intense interest, not only by those more 

 immediately attached to zoology for the valuable additions to that science 

 which it was certain of making, but by all who, remembering the dreadful 

 privations and acute sufferings of the party of which Dr. Richardson was 



