SPREADING OF THE MAMMALIA. 51 



World) has placed the animals of that part of the 

 earth conformably to the different altitudes at which 

 they live above the level of the sea : but the true 

 native country of other animals, which he has not 

 enumerated, can be inferred only from properties 

 observable in each individual. 



SPREADING OF THE MAMMALIA. 



The Marine Mammalia are met with in all the 

 Seas of the world ; yet they are, more generally, 

 natives of the Polar Seas ; where they are found in 

 much greater numbers than the Quadruped Mam- 

 malia, in the vicinity of the snow-line, on dry land. 

 Mammalia which are furnished with hands, such as 

 Apes and Monkeys, belong to warm climates, spread- 

 ing from the Torrid Zone over a small part of the 

 Temperate Zone. The Quadruped Mammalia in- 

 habit the main land, each within certain limits, from 

 the snow-line to the Torrid Zone. 



Of the MAMMALIA of the SEAS : 

 1. The Whale (Balcena) is peculiar to the icebergs 

 and plains of the Frozen Sea, and extends much be- 

 yond the 80th degree of latitude. Individuals of 

 this Genus are more seldom found in the Temperate 

 and Warm Zones ; although they are diffused in the 

 c2 



