238 J. HOPKINSON THE WEATHER 



Berkhamsted registered 5° of frost. Very nearly all the rain in 

 the month fell on the 4th and from the 12th to the 21st. There 

 was a thunderstonn on the 16th. The 4th was the wettest day 

 at 16 stations, the 13th at 12, the 14th at 21, and the 16th at 5. 

 The following readings (at St. Albans) give the temperature 

 for the hottest week in the year, and show how rapidly it rose 

 and fell : — 



o o o o o 



August 29, 9 a.m. 61-5 ... min. 



Sept, 



October. — Very warm, with a moist atmosphere, a cloudy 

 sky, and a very heavy rainfall on a large number of days. The 

 mean daily range of temperature was rather less than usual, 

 owing to the greater excess over the mean in the night than in 

 the day. The first half of the month was much warmer than 

 the second half, or rather the first 13 days than the last 7, the 

 intermediate period being very variable in temperature. The 

 rain was distributed fairly equably over the month. The 1st 

 was the wettest day at 13 stations, the 2nd at 29, the 18th at 10, 

 and the 29th at 2. The rain on the 1st and 2nd was one 

 continuous fall, commencing on the evening of the first. Up to 

 9 a.m. on the following morning it reached at least half an inch 

 at 27 stations, three-quarters of an inch at 12 of these, and an 

 inch at 5 of the 12: 100 in. at Rose Cottage, Berkhamsted, 

 1*01 in. at Rothamsted, Harpenden, and at Bridge House, 

 Welwyn, 1*16 in. at Bone Hill, St. Albans, and 1-17 in. at 

 Grorhambury, St. Albans. On the 2nd, that is after 9 a.m., it 

 was at least half an inch at all stations, three quarters of an 

 inch at 21, and an inch at 3 of these : 1"06 in. at Eosebank, 

 Berkhamsted, 1-07 in. at Rose Cottage, Berkhamsted, and 1*10 

 in. at Cowroast Lock, Tring. On the 8th it reached at least half 

 an inch at one station, and on the 9th at 5 stations. On the 18th 

 at least half an inch at 28 stations, three quarters of an inch 

 at 9 of these, and an inch at 7 : 1"03 in. at Gorhambury, 

 St. Albans, 105 in. at Bulbourne, Tring, 106in. at Rosebank, 

 Berkhamsted, and at Rose Cottage, Berkhamsted, l'07in. at 

 Kensworth, r08in. at Apsley Mills, Hemel Hempstead, and 

 1*18 in. at Cowroast Lock, Tring. And on the 28th at least 

 half an inch at 18 stations, and thi'ee quarters of an inch at one 

 of these, Croxley Green. 



* Mean of max. and min., as usually determined. 



t Mean of 9 a.m., max., and min., which gives a closer approximation of the 

 mean temperature of the day, and makes the 1st of September the hottest day in 

 the year (at St. Albans), although it had not the highest maximum temperature. 



