194 



THE CANADIAN NATURALIST. 



[June 



1 8. Weeks of Maximum and Mininuim mortality, for 

 all ages, in Montreal. 



Highest 

 Mortality, in 

 week ending 



July 21 . . 121 



': 27.. 185 



Lowest 

 Mortality, in 

 week ending 



Which is at the I Range of Actual Range General 

 I • ■*' . of variation, Average 



yearly rate, per variation, at 

 living, of yearly rate 

 per 1,000. 



\ June 9.44 n 



\ Dec. 1.45 



Nov. 2.39 



Jan. 18.48 



between ; of the 

 max. and rain. I year, 

 weeks I per 1000 



32.2 



38-3* 

 39-6 



Or, for Adults only. 



Apr. 50. .36 

 Aug. 5.. 33 

 May 19. .37 

 " II- -35 

 JulyiS..57t 



SeiJt. 3 7 



■' 23 10 



July 14 14 



June 22 10 



Sep. 12 12 



* If the mortality (corrected for increase of population) had been calculated fi-om 

 September ist, 1866, to September ist, 1867, it would have given the death-rate of the 

 year as 40.6 per 1000. 



t Thirty of these were from sunstroke: see note to Table 11. It appears that, 

 with this exception, the range of variation for adults is remarkably uniform. 



These tables, compiled with the greatest attainable accuracy 

 for the space of 14 years, prove to an absolute demonstration, 

 after making all reasonable deductions for possibilities of error, 

 not merely on the average of years, but in each single successive 

 year, (1) that the mortality of Montreal is excessive as compared 

 with the immediately adjacent country districts, under the same 

 climatal conditions, but less favoured as regards wealth and 

 intelligence; (2), that this excess is utterly disproportionate in 

 the ratio of the deaths of children and adults; (3), that this 

 excessive mortality of children uniformly attains its greatest 

 height during the heats of summer. It is possible to bring out 

 these facts with even greater distinctness. 



The mortality of July, 1867, having reached a higher point 

 than that of any previous year without special epidemics or 

 unusual heat, in spite of comforting assurances from the city 



