the Human Kind and other Animals, 285 



different parts of the world, the inhabitants of which 

 had, for ages, been separated from each other, is speci- 

 fically the same ? The investigation of this fact might 

 be worthy of the attention of naturalists, who visit new 

 countries. It might, perhaps, throw some light upon 

 the important question, concerning the origin of man- 

 kind. The laws of the Mexicans show us, that head 

 pediculi were very abundant among the poor of that 

 singular people*. But it does not follow, that the 

 Mexican pediculi were of the same species as those 

 which Cortes and his associates brought with them in- 

 to the countries which they visited and conquered. I 

 cannot help thinking, that a complete history of the hu- 

 man Pediculi would prove quite as interesting as a his- 

 tory of Bugs and Fleasf , 



Mr. Blumenbach concludes the subject which he has 

 examined by observing, that he passes over those dis- 

 eases which, although they are not peculiar to man, are 

 nevertheless much more common among our species 

 than among any other animals : such as 



1. Troublesome Dentition, 



2. Mola, 



3. Abortion, 



* See Clavigero's Histoxy of Mexico. Vol. II. 



t An English writer, by the name of Soutliall, published a 

 work on Bugs, in the year 1 730. 



SUPPL. O O 



