JDr Davy on Animal Heat. 357 



and within the tropics on descending from a cool mountainous 

 district to a hot low country, it would appear that his tem- 

 perature, as measured by a thermometer placed under the 

 tongue, is liable to fluctuate, — rising one or two degrees in a 

 warm atmosphere, and falling as much on entering a cool 

 one,* — it seemed probable that like differences of effect might 

 be produced by air kept at different degrees of temperature 

 in buildings in this country. 



In the autumn of last year, when going through the cotton 

 manufactory of Deanstone, in the neighbourhood of Doune, in 

 Stirlingshire, — an establishment admirably conducted, and in 

 the highest order, — I availed myself of the opportunity to try 

 the temperature of a few individuals in relation to this ques- 

 tion. In the room called the " piecing-room," where a high 

 temperature is always required on account of the kind of 

 work, — a temperature kept up by means of warm air and 

 steam, — when at 92°, I found the thermometer placed under 

 the tongue of one man who had been at work there about six 

 hours, rise to 100°.5 ; and of another, who had been there the 

 same time, to 100° : the former was 52 years of age, healthy, 

 his pulse 64 ; the other 33 years of age, in pretty good health, 

 but liable to acidity of stomach ; his pulse 78. 



In an adjoining room, where the temperature of the air was 

 73°, the thermometer placed under the tongue of a young 

 woman rose to 99° ; and in a large room, where 300 persons 

 were employed in weaving, and where the temperature of 

 the air was 60°, the thermometer placed under the tongue of 

 another healthy young woman rose only to 97°.5. 



Few as are these observations, they seem to warrant the 

 conclusion that a high temperature of even a few hours in the 

 heated air of a room is capable of raising the temperature of 

 the body above its usual standard, in accordance with what 

 had been anticipated from the effect of different degrees of 

 atmospheric temperature. 



In further confirmation of the same, I may briefly state the 

 results of multiplied observations made on the temperature of 



♦ Op. Cit, i. 169. 



