18G9.] 



CARPENTER — ON VITAL STATISTICS. 



197 



23. Average Weekly D cat Ji-rate of Children in Montreal, 

 1 867, for each year of life. 



December 



July 



June, July, August 



April, May, September, October 

 Nov., Dec, Jan., Feb., March 



Average for year 



Under 

 I year. 



72.9 

 32.0 

 253 



From 

 I to 5. 



From 

 5 to 12. 



It appears, therefore, that a boy of 5 years has about 100 

 times the chance of hfe that can be hoped for an infant of 

 months, both in December and July. But according to seasons, 

 the older child has 42 chances of life, as compared with his baby- 

 brother, in winter; 64 chances in spring and autumn; and 91 

 chances in summer. 



So the child under 5, as compared with the baby, has 10 

 chances in December, 1 1 in July, 9^ in summer, 7J in spring 

 and autumn, 10^ in winter. 



On the average of the year, the child under 5 has nine chances 

 of Hfe as compared with the baby ; the child above 5, sixty-six 

 chances. Against what fearful odds do the infants in this city 



24. Comparison of Montreal Children's Death-rate in 

 air-poisoning, open, and frost-bound months. 



Average. 



Average weekly death-rate of children, 



under i year, 1867 



Ditto, between i and 5 years . . 1867. 

 Ditto, between 5 and 12 years. .1867. 



Ditto, all ages under 12 years . .1867. 

 Average week for 10 years, all ages, 



Air-poisoning 



Months : 



June, July, 



August. 



72.9 

 30-4 

 5-6 



Open 



Months : 



April, May, 



Sept., Oct. 



32.0 

 17.4 

 3-5 



Frost-bound 



Months : 



Nov., Dec, Jan., 



Feb., March. 



25-3 

 9-7 

 4.0 



That the excessive infantile mortality of July, 1867, was not due 

 to exceptional climatal influences, will appear from the following 

 statistics of Boston, obligingly furnished by Mr. Antonio, the 



