TAKEN AT ST. ALBANS IN 1893. 



61 



In the autumn (Sept. to Oct.) the mean pressure of the 

 atmosphere "svas ahout the average, the temperature was just the 

 averatie, with a considerate mean daily range, the air was rather 

 diy, the sky rather hright, and the rainfall was about the average 

 and on an average number of days. As in spring and summer, 

 the nights were, on the whole, colder than usiial. 



The difference between these seasons and the means of the 

 seasons for 1877-86 at Watford is shown in the following table : — 



Difference in 1892-93 from: Means of 1877-86 at "Watfoed. 



Notes on the Months. 



Janttart. — Cold, with a small daily range of temperature, an 

 atmosphere of average humitlity and rather high pressure, a rather 

 cloudy sky, and' about an average rainfall on an unusually large 

 number of davs. Coldest day 2nd, mean 23°'0 ; wannest day 31st, 

 mean 46°-4. Min. below 32° on 16 days, below 22° on 5 (1st to 5th) ; 

 max. above 42° on 11 clays (below 32° on 4). The first five days 

 were very cold, ha-\ang a mean temperature of 24°"9 (9 a.m. 24°-9, 

 min. 18°*0, max. 32°"0). Rain, or snow, fell every day from 

 11 th to 19th (9 days), and from 25th to 3rd February (10 days), 

 snow falling on 3rd, 5th, 6th, and 12th to 18th. 



Fkbruary. — Rather warm, with about an average daily range 

 of temperature, an atmosphere of average humidity and very low 

 pressure, a cloudy sky, and a very heavy rainfall on an unusually 

 large number of days. Coldest day 6th, mean 31°"4 ; warmest day 

 19th, mean 49°-7. Min. below 32° on 8 days; max. above 42° 

 on 20 days, above 52° on 2 (18th and 19th). Rain (occasionally 

 snow) fell every day for the 11 days 8th to 18th, and, with 

 the exception of 9th and 24th, every day from 8th February to 

 4th March, snow falling on 12th, 21st to 23rd, and 27th. There 

 was a gale of wind on 10th, and on 21st barometric pressure 

 was unusually low, being 28'753ins. at 9 a.m., 28-702 ins. at 

 noon, and 28-689 ins. at 3 p.m. At 9 a.m. on the following day 

 it had only risen to 28-979 ins. 



March. — Wami, with a large daily range of temperature, a diy 

 atmosphere of considerable pressure, a bright sky, and a very small 

 rainfall on very few days. Coldest day 19th, mean 35°-2; warmest 

 day 31st, mean 52°-7. Min. below 32° on 7 davs; max. above 52° 

 on 23 days, above 62° on 6 (24th to 26th, and 29th to 31st). There 



