NATURAL HISTORY OF MAN. 39 



than an original. I do not mean a variety arising out of an original ; 

 for the Avolf that was lined by a dog, had the puppies more like the dog, 

 at least in colour, than the wolf. The same with the jackall, both in 

 the first change and the second litter. 



However, this was not the case with the offspring of the white Negro : 

 therefore we must suppose that such are only half monsters respecting 

 breeding, similar exactly to a mixture of two original varieties. Ori- 

 ginal varieties are, therefore, either perfect or imperfect : and next 

 come the varieties of mixture, or of one original with another. 



Animals in proportion to their powers of sagacity are more easily 

 moved from their instinctive principles than those that are less so ; and 

 such therefore are more easily domesticated ; and, probably, from this 

 circumstance, they may more readily admit of greater variety in their 

 offspring. The dog appears to explain this, as strongly as any other 

 species. The dog is a sagacious animal ; the varieties he has gone into 

 are almost endless, as also the dispositions of each, for they seem to 

 have gone as far from the original, or the wolf, in disposition — in what 

 may be called their instinctive principles — as they have in size, shape, 

 colour, &c. 



Mr. "Walsh 1 informed me he put a wolf- puppy among some dog- 

 puppies. The wolf was asleep all day and awake all night ; the dogs 

 the contrary. 



On the Natural History or Man. 



Superiority of Man according to Mind. 



All animals bear a pretty close comparison with one another 2 , ex- 

 cepting the Human ; because they are all ruled by natural and instinct- 

 ive principles. But the Human, being an animal of art, when he is com- 

 pared with others, it should be in regard to his instinctive principle only. 

 Animals may be compared to one another in their facility to learn, the 

 Human being at the head ; and probably brute animals are capable only 

 of learning, the Human being the only animal capable of invention. 



Is not the Human Being a congeries of every animal ? Has he not 

 the instinctive principles of every animal, with this difference, that he 

 chooses or varies the mode of putting those principles into action ? 



1 [John Walsh, Esq., F.R.S., the friend of Benjamin Franklin, and to whom 

 Hunter wa3 indebted for the specimens of Torpedo which he dissected and described 

 in the Phil. Trans, vol. lxiii. 1773.] 



2 [Animals, in regard to psychical qualities, bear a pretty close resemblance to one 

 another (*?), excepting, &c] 



