Various Tables of Annuities. 339 



No data have yet been published by which the additional 

 premium can be determined, which should be paid when 

 the subject of the policy has any chronic disease. The only 

 case of which I have endeavoured to determine the risk is 

 child-birth. The deaths in child-birth during the ten years 

 from 1818 to 1827 by the London bills were 2117, the number 

 of christenings 241352, and the number of still-bom 7575, which 



would give or — — , for the probability that a woman does 



not survive giving birth to a child, making the extra premium 

 of insurance about 17s. At Strasburg the deaths in childbirth are 

 1 in 109. At the City of London Lying-in Hospital in 1826, the 

 deaths were 1 in 70 ; in the Dublin Hospital in 1822, there were 

 12 deaths among 2675 women delivered, or 1 in 223; in the 

 Edinburgh Hospital the mortality is 1 in loO; in the whole 

 kingdom of Prussia in 1817, the deaths were 1 in 112. See Dr. 

 Hawkins's Medical Statistics. Most extensive returns of sickness 

 have been furnished to the Society for the Diffusion of Useful 

 Knowledge by Friendly Societies, and these will no doubt furnish 

 much valuable information upon the subject of the duration of 

 sickness. If returns could be obtained from Hospitals of the 

 ages at which individuals come in afflicted with different com- 

 plaints, with the time they continue under treatment, and the 

 number who die, these would also furnish the means of de- 

 termining the probability of a' sick person continuing sick for 

 any given time, and the probability of an individual sick dying; 

 from this and the probability of an individual dying at the given 

 age which is given by the Tables, the probability of an individual 

 falling .sick at a given age with his expectation of sickness at that 

 age might be determined. The Bills of Mortality in London give 

 the diseases by which deaths are occasioned, but unfortunately 

 the .sexes are not distinguished. 



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