DR. DAVY ON THE TEMPERATURE OF MAN WITHIN THE TROPICS. 441 
4. Of the Effect of Carriage Exercise on the Temperature. 
The carriage used was a light one adapted to the climate, open behind as well as 
in front, and well-protected from the sun, except when low, by a deep hood : the 
rate of going was commonly between six and seven miles an hour; a servant drove. 
Tongue. 
Pulse. 
Eespira- 
tions. 
Air of 1 
room. 1 
January 28, 1846, 9 p-m. After coming from Mount Wilton, about 900 feet 
O 
o 1 
above the level of the sea 
97-9 
70 
13 
73 
August 27, 1846, 5 p.M. After a drive of about sixteen miles, going to and 
returning from Villa Nova, in Barbados, in a cool situation about 700 feet 
above the level of the sea 
97*8 
48 
14 
80 
September 3, 1846, 11 p.m. After coming from Villa Nova 
November 18, 1846, 5 p.m. After a drive of about twenty-four miles in the 
97*7 
38 
16 
79 
heat of the day, going and returning, and some walking exercise in a low 
district of Barbados, fasting 
98-3 
60 
16 
82 
November 18, 1846, 10 p.m. Feeling weary, after dinner, followed by tea... 
99-1 
38 
13 
79 
November 21, 1846, 11** 30“ p.m. After coming from Villa Nova 
December 18, 1846, 3 p.m. After coming from Blackman’s, situated like 
97-7 
38 
16 
79 
Villa Nova, and about the same distance ; took a good deal of walking ex- 
ercise there; the wind high 
98-6 
70 
13 
80 
December 18, 1846, 9 p.m. Feeling weary, hot and thirsty 
99-7 
80 
16 
79 
February 4, 1847, 12 p.m. After coming from Villa Nova 
97-5 
38 
13 
74 
April 23, 1847, 10** 30“ p.m. After coming from Villa Nova 
97-1 
34 
14 
77 
June 14, 1848, 10 p.m. After coming from Villa Nova 
98-2 
38 
13 
82 
Many other instances, of which I have notes, might be adduced to show the effects 
of carriage exercise in lowering the temperature, — an effect previously observed in Eng- 
land. Those given, which were chiefly at night, were best marked, no doubt owing 
to the temperature of the air then being lower than by day, and the heat from the 
reflected and direct rays of the sun being then entirely avoided. When coming from 
the higher grounds of the interior of Barbados at night, and often when ascending 
them by day, the feeling of coolness was such as to render agreeable some additional 
clothing, which was always provided, though the difference of atmospheric tempera- 
ture was only of a very few degrees. The latter observations, those of the 18th of 
November 1846 and of the 18th of December, are given as showing the tendency to 
augmentation of temperature of body in an undue degree after unusual depression, 
preceded by fatiguing exercise. The rise, so far as it was abnormal, was probably 
owing to the influence of the fatigue, for it was not witnessed if such exercise had 
not been taken. 
5. Of the Effect of Gentle IValking Exercise on the Temperature. 
The following observations were made when convalescing from illness (an anthrax 
with extensive sloughing and general derangement of health), a time when the body 
in a delicate state seems to be very readily acted on and to show the effects with un- 
usual distinctness ; — 
3 L 
MDCCCL. 
