202 Weather of 1911 in Relation to Health. 



temperature 38.4 deg. F., the humidity 89 per cent. ; average 

 rainfall 5.91 inches, the average number of wet days being 19. 

 The total number of deaths was 66, giving a rate of 15.155 per 

 1000. The average death-rate of this month during the ten 

 previous vears having been 19.507, the expected deaths may be 

 stated as 85 or 19 more than the actual number. Circulatory 

 diseases, pneumonia, and cerebral haemorrhage Avere again among 

 the principal causes of death, but the phthisis mortality was low. 

 There was a considerable diminution in the cases of scarlet fever 

 as compared with the previous month, the number coming under 

 observation dropping to 16. A few cases of diphtheria began to 

 appear. 



March. — During this month there was a prevalence of keen 

 north-easterly winds, giving an impression of great cold, but the 

 mean temperature was practically about the average or very 

 slightly above. The barometer was fairly high and the rainfall 

 low, there being a considerable period of drought. The average 

 pressure was 29.644 inches, the mean temperature 39.6 deg. F., 

 the humidity 83 per cent., the rainfall 1.61 inches, the number of 

 rainy days 14. The total deaths registered were 67, giving a rate 

 of 13.897 per 1000. The average death-rate was 16.933 and the 

 expected deaths 81. The principal diseases contributing to the 

 mortality of the month were cerebral hemorrhage and cancer. 

 The circulatory disease mortality was at its lowest for the year, 

 and it is of interest to note that mortalities from phthisis, pneu- 

 monia, and bronchitis were low. The number of cases of scarlet 

 fever coming to our knowledge was one less than in February. 

 Diphtheria cases continued to occur, but did not increase. 



April. — This month was somewhat breezy, in spite of the 

 fact that the barometric pressure remained high during the first 

 half, and anti-cyclonic conditions prevailed. The mean tempera- 

 ture was low, intense cold being sometimes experienced during 

 the day. The rainfall was above the average at most stations 

 in the north and west. The average of the barometric readings 

 was 29.629 inches; the mean temperature, 42.7 degs. F. ; the 

 humidity, 82 per cent.; the i^ainfall, 4.56 inches; and the rainy 

 days, 18. The deaths registered were 97, the rate being 20.793 

 per 1000. The average death-rate was 17.875, and the number 

 of expected deaths 83. The death-rate is the highest of any 

 month in the vear. The chief contributors to it were the circula- 



