MAMMALIA— MAN. 37 



TABLE OF THE PROBABILITIES OF THE DURATION OF LIFE. 



By this Table it appears, that it is reasonably to be expected, or, in other 

 words, that Ave may lay an even wager, that an infant newly born, will live 

 eight years longer ; that an infant of one year, will live thirty-three years 

 longer; that an infant of two years, will live thirty-eight years longer; that 

 a man of twenty,' v.-ill live thirty-three years and five months longer ; that a 

 man of thirty, will live iv/enty-eight years longer; and so proportionally 

 of every other age. 



Ideas of external things are conveyed to the soul of man by means of the 

 live Senses for seeing., hearing, feeling, tasting, and smelling. The organs 

 through which the senses act are the nerves, which are small thread-like 

 fibres, distributed all over the body, and all of them connected Avith die brain. 



The eyes seem to be formed very early in the human embryo. In the 

 chicken, also, of all the parts that are double, these are the soonest produc- 

 ed ; and it is observed from the eggs of several sorts of birds, as well as 

 from those of lizards, that the eyes are much larger and more early in their 



