OF ANIMALS. 35 



aping the first 1 . In the third 2 they are male and female, but do not 

 insert. The fourth 3 are some male and female distinctly; others are 

 Hermaphrodites, but [of these some] propagate with each other, while 

 some copulate with themselves ; thus some ape the more perfect, others 

 not. 



Division of Animals according to their Temperature. 



Animals should not be divided into the 'Warm' and 'Cold.' They 

 should be divided into those of permanent heat, in whatever climate, 

 and those that change [in heat] with the climate. For the snail, which 

 lives in the hot baths in Italy 4 , lives in a warmer atmosphere than the 

 heat of the animals of permanent temperature ; therefore it must be 

 warmer than the permanent. 



These divisions [of 'warm-blooded' and 'cold-blooded' animals] 

 were made by Naturalists of cold climates. 



In proportion to the coldness of animals they cannot bear cold wea- 

 ther ; viz. snails, snakes, lizards, &c, cannot bear the cold. A whale 

 can live in Greenland all winter, but the cold fish come south in Avinter. 



Classes of Animals according to Size of Body. 



The Quadruped [Mammalia] is the largest class of animals [i. e. in- 

 cludes animals of the largest size, e. g. whales, elephants, rhinoce- 

 roses]. The Amphibia probably next [e.g. crocodiles]. Fishes are the 

 third [sharks]. Fowl the fourth (ostriches, &c). Insects of the first 

 class [Crustaceans, e.g. crayfish, lobsters], the fifth. Insects of the 

 second class, the sixth. 



Division of Animals according to the Element they frequent. 



All animals must have certain general principles, or they would not 

 be ' animals ; ' and it is the different combination of these principles 

 that produce different animals : the classing of animals is no more than 

 the classing of those different combinations, for there is a great regu- 

 larity in the variations. 



1 [This character would apply to Aves, the exceptions being the Struthionidce, 

 Anseres. If by the 'second' Hunter means his 'second class according to hearts,' 

 or ' Tricoilia,' then intromission is the rule, and the Batrachia the exception.] 



2 [Here the ' Dicoilia,' or third class according to hearts, i. e. Pisces, is evidently 

 meant.] 



3 [The ' Monocoilia ' may be here meant by the fourth class ; but the generative 

 character would apply to the Invertebrata at large.] 



1 [The Cyclostomum tliermale of the hot-springs of Abano moves about with great 

 activity, and propagates in water of the temperature of 100° Fahrenheit.] 



n 2 



