90 



Chasr,] •^^ [FelDruary 5, 



Notwitlistancling the increased juvenile mortality consequent upon 

 immigration, the Philadelphia table shows a possible life of 114, a prob- 

 able life of 33.44, and an expectation of 35.09. I know no other city of 

 much magnitude in which so favorable vital conditions have ever been 

 repoi-ted. 



In preparing the Philadelphia table the following valvies were ascer- 

 tained : 

 Eatio of deaths of colored persons to entire number of 



deaths ; for 62 years 8.7 per cent. 



Do. from 1863 to 1867, inclusive 6.7 



Average mortality, 62 years 1 in 47.836. 



" Colored mortality, 62 years 1 in 27.763. 



" " " 1858 to 1862, inclusive 1 in 34.780. 



Eatio of still-births to total births 4.3 per cent. 



" " " " deaths 5.8 " 



" " living births to population 2.8 " 



" " deaths to births 74.5 " 



Natural annual increase 7 " 



Average " " 3.3 " 



" " immigration 2.6 " 



Mean age at death ' 23.57 years. 



" "of the living 24.29 " 



Dr. Emerson's discussions showed a ratio of deaths of colored persons, 

 as great as 16 per cent, of the entire number of deaths ; an average white 

 mortality varying between 1 in 38.25 and 1 in 56.53 ; an average colored 

 mortality of 1 in 19 from 1807 to 1820 inclusive, and of 1 in 27.2 from 

 1821 to 1830 inclusive. We have no means of determining the ratio of 

 colored mortality since the close of the war, but even if it should show a 

 temporary increase, there can be little doubt that the general sanitary 

 improvement noted by Dr. Emerson still continues. The diminution in 

 the per centage of colored deaths, from 16 per cent, to 6.7 per cent., is 

 attributable in part to this general improvement, and in part to the pre- 

 ponderating increase of the white population. 



The advantages of regular habits are shown by the following com;ga- 

 risons : 



Friends. 



Maximum vitality (age 12) 310.56 



Average proportionate mortality 



from 20 to 60 years of age 14.25 



Expectation of life 43.73 



Probable life 48.08 



Proportionate mortality at birth. .. 124.66 



