Calendar of Nature. 29 
un 
Art. III. Calendar of Nature. 
ScoTLAND. 
Dracram (fig. 80.), showing the Motion of the Mercury in the Barometer and 
Thermometer, and the Dew Point, or the Mean of each, for every Ten 
Days in the Months of February and March ; also the Mean Temperature 
of the Air within 6 in. of a South Brick Wall, commencing on the Ist of 
March, the Thermometer being shaded; and the Depth of Rain in the 
Pluviometer, and the Quantity of Moisture evaporated in the Evapo- 
rating Gauge during the same Period; as extracted from the Register 
kept at Annat Gardens, Perthshire, N. lat. 56° 233’, above the level of 
the sea 172 ft., and 15 miles from the coast, being the mean of daily 
observations at 10 0’clock morning and 10 o’clock evening. 
80 
Evaporating Rain Gauge, and Index of Thermometer Evaporating 
Gauge. and Barometer. Gauge. 
t [30 
a ee eo LU 
ely Ssdoe° ali poul ef] ake hoget Peed | 
Index of Thermometer, 
Index of Barometer 
Feb. February. March. _ March. 
The lines marked 6 show the motion of the mercury in the barometer, 
ts w the mean temperature of the air near a south garden wall, ¢ the mean 
temperature in the open air, and d the dew point. 
The coldest day in February was the 6th: mean temperature of that 
day 25°; extreme cold 24°; wind easterly. The warmest day was the 26th : 
mean temperature of that day 51°5°; extreme heat 56°; wind south-west. 
There were 5 days of brilliant, and 7 of partial, sunshine ; 16 were cloudy. 
