In the whole matter, all the difference between these two tables consists in 

 this, that Dr. Halley's is more perfect, more compact, and more conformable to 

 those observations which conduct us to the idea of a progression nearly arithme- 

 tical, which the great number of researches enables us to unfold by little and 

 little, in the representation of the strength of human life, when that strength is 

 become more uniform. 



VOL. X. 



3D 



