9(5 CE C O N O M Y 



confined within narrower limits in this re- 

 fpe6t. Yet in general, we find, that nature 

 obferves this order, that the lead animals, and 

 thofe which are ufefull, and ferve for nourifh- 

 ment to the greateft number of other animals, 

 are endued with a greater power of propagat- 

 ing than others ^, 



Mites^ and many other infe6l:s will multiply 

 to a thoufand within the compafs of a very few 

 days. While the elephant fcarcely produces, 

 one young in two years. 



The hawk kind generally lay not above two 

 eggs, at moll four, while t\\t poultry kind rife 

 to 50. 



The diver or loon^ which is eaten by few 

 animals, lays alfo two eggs, but the duck kind, 

 the mcor game^ partridges^ &c. ^ndfmall birds 

 lay a very large number. 



If you fuppofe two pigeons to hatch nine 

 times a year, they may produce in four years 

 14672 young ^ They are endued with this, 



t> Herodotus fpeaking of the flying ferpents in Arabia 

 makes the fame refledtion, and attributes this courfe of na- 

 ture to the divine providence. Thai. 



c I have given this paffage as it flands in the original. 

 The numbers ought to have been 14760, or the expreihon 

 ihould have been altered ; for he includes the firll pair. 



He fuppofes it generally known that pigeons hatch but 

 two eggs at a time, and that they pair,^ 



remark- 



