made in the Garden of the Horticultural Society. 401 



indicated in the shade at noon was 78° on the first of the 

 month, and 108° in the sun. 



In October the heat and dryness of the previous season had 

 entirely passed away, and was succeeded by cold unsettled 

 weather during the whole of the month ; notwithstanding 

 the wind was for the most part in a southerly direction, the 

 mean degree of moisture was found to be as high as .906, and 

 the least which was observed was .658. The amount of rain 

 was 2.40 inches. The greatest heat was 69° in the shade, 

 and 82° in the sun at noon, while the thermometer was one 

 day as low as 43° in the shade : it was remarked however to 

 be 71° at the same time in the sun ; so that while with a tem- 

 perature of 69°, the amount of solar radiation was only 13°, 

 it was with the low temperature of 43° as much as 28°. Two 

 nights only were frosty, each being 30° against a wall, and 

 28° according to the radiating thermometer. The common 

 range of the thermometer at night was between 34° and 42°. 



November was cold and unsettled, with frequent frosts at 

 night, the thermometer having indicated a temperature lower 

 than 32° for 15 nights. On the 12th it was as low as 23°. 

 The days were also cold, the thermometer usually ranging 

 in the shade at noon from 45° to 50° ; in the sun however it 

 was at three several times higher than 70° at the same time ; 

 but the mean temperature was only 42°. The atmosphere 

 was in a high state of humidity, the mean degree of moisture 

 being .921, and the least degree .714. The amount of rain 

 was 2.83 inches. 



December was milder than November till the 27th, when 

 a sharp frost set in ; up to that time there had been only 4 

 frosty nights. The mean temperature was 41°.2. The mean 



