Public Parks. 69 



from the north-east. From the ist to the 21st day of October, the 

 mean temperatm^e was 63°, The winter of 1867 was milder than 

 that of 1866, and, although there was a great increase in population, 

 80 more deaths occurred; the spring was colder, and the mortality- 

 still less ; the summer was warmer than 1866, and the decrease in 

 the number of deaths was still more marked ; the autumn was colder, 

 and the mortality was not much over one-half as great. It will be 

 observed that in this year (1S67,) the mortality was more equally 

 distributed between the westerly and easterly winds, and that the 

 difference between the number that died while northerly and south- 

 erly winds prevailed, was nearer the normal number, and that the 

 deaths wei'e more equally distributed among the seasons than 

 during either of the other years. 



In 1868 the extreme cold of winter, with the exti"eme heat of 

 spring and summer, and cold of autumn, with the unusual amount 

 of rain that fell, greatly increased the mortality, although no 

 epidemic prevailed. In the winter the mortality was unusually 

 heavy, particularly during the prevalence of the north-west and 

 south-west winds. 



The tables on pages 64 and 6^., illustrate the frequent changes 

 of temperatvire in the direction of the wind, and in them may be 

 found a record of the great climatic changes that have taken place 

 here within the last three years. 



A careful examination of the table on page dG.^ will show the 

 influence of temperature and rain upon health. In that for 1866, 

 will be noticed the mildness of January, the cold of February, the 

 warmth of March, April, and May, the coldness of Jvme, and 

 extraordinary range of temperature, the warmth of July, and cold- 

 ness of August, and, still more marked, that of September, with the 

 extraordinary warmth of October, November, and December ; also, 

 the great amount of rain that fell in the last half of this year, and 

 all conditions conducing to and explaining the great fatality incident 

 to that season of the year. In 1867 the temperature during the entire 

 year was seasonable, — cold in winter, milder in spring, warm in 

 summer, and pleasant in autumn, without any great extreme. 

 About the usual amount of rain fell in the first half of the year, 

 but in July, August, and September, an unusually small quantity fell. 

 This season of dryness, in a sanitary point of view, was beneficial, 

 owing to the want of drainage in a large portion of our city, in 

 diminishing mortality. The influence of this equability of temper- 

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