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NO. 8.-TEMPERATURE, AND SICKNESS FROM SCARLATINA IN MICHIGAN.

By months for a period of 10 years, 1877-86, the rela
tion of Sickness in Michigan from Scarlet fever to
the Average Atmospheric Temperature. The tempera-
ture curve is reversed,-the scale increases downwards.)

Per cent of

Reports.*

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Degrees Fahr

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Scarlet Fever.

Average Temperature —

*which stated that Scarlet Fever was under the observation of the physicians who made reports.

Over forty-one thousand weekly reports of sickness and over 190,000 observations of the atmospherio Temperature are represented in this diagram.

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small-pox Average Temperature Except in a few months the small-pox follows two months later than the temperature changes.

The line representing Small-box should follow as long a time later than a line representing its controlling condition as is the average duration of the fatal cases plus the period of incubation?

No 10 Temperature, and Deaths from Phthisis in London. By months for a period of 30 years, 1845-74, the relation of average Death per week, in London, England, from Phthisis, to the Average Atmospher

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About 231.000 deaths from Phthisis are represented in this diagram data for which are from Tour of Scottish Met. Soc., New Series Nos XIII, XLIV, XIV, XIVI, pages 252 and 263.

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Consumption.

Average Temperature___

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No 12. Temperature and Deaths from Bronchitis in Londer. By months for a period of 30 years, 1845-74, the relation of Average Deaths per week, in London England from Bronchitis, to the Average Atmosph eric Temperature (The temperature curves. reversed, the scale increases downwards)

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About 176,000 deaths from Bronchitis are represented in this diagram data for which are from Jour of Scottish Met. Soos New Series Nos. XLIII, XIV, XLV, XLVI, pages 253263

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