1 4-0 Mr. J. Glaisher's Remarks oti the Weather 



The average daily ranges of the thermometer in air, at the 

 height offour feet, were 16°-0, ]6^-3, and 20°-6. The average 

 ranges of these three months from the observations of the 

 eight preceding years, were 16°-8,19°*2, and 19^*2 respectively. 



The readings of the thermometer on grass in April was at 

 and below 32° on nineteen nights, the lowest was 19 ; between 

 32° and 40° on eight nights, and above 40° on three nights. 

 In May the lowest reading was 26 '7; and the readings were 

 below 32^ on four nights ; between 32° and 40° on seven 

 nights; and above 40° on twenty nights. In June the read- 

 ing was 32° on one night; at and below 40° on nine nights; 

 between 40° and 50^ on eighteen nights; and above 50° on 

 one night. 



At St. John's Wood the lowest reading of a thermometer 

 with its bulb placed in a parabolic reflector and fully exposed 

 to the sky, was 20°-2 in April, 27°-2 in May, and 31°*^in June. 



At Cardington the reading of a thermometer on grass was 

 less than 32° on eight nights in June; the lowest reading was 

 26°-5. 



At Wakefield, on June 12 and 13j water exposed to the 

 sky wasirozen on both nights. 



At Whitehaven the month of June was unusually cold, and 

 vegetation was subjected to very low temperatures at night; a 

 thermometer placed on grass on a layer of wool frequently fell 

 many degrees below the freezing-point, and on two nights it 

 fell to 25°. Ice was seen on several mornings, and snow fell 

 amongst the mountains on the 3rd, a phfienomenon which has 

 not been witnessed in June since the year 1827. 



During the month of June the readings at night were un- 

 usually low, even the temperatui'e of the air in many places 

 nearly fell to 32°, and actually did so in York, which was a 

 point lower than the observer Mr. Ford had ever before seen 

 in June. 



There were four exhibitions of the aurora horealis during 

 the quarter ending June 30, 1849 ; it occurred on May 31, and 

 was seen at Stone; on June 15 at Stone; on June 26 at La- 

 timer, auroral streamers passed from S.W. nearly across the 

 zenith to the horizon in the N.E. ; and on June 30, at Latimer, 

 some beautiful auroral flashes were seen at 10^ 30"" p.m. 



Thunder-storms occurred on April 28 and on May 2 at 

 Stone; on May 3 at Uckfield, Stone, Saffron Walden, and 

 Nottingham; on May 4 at Uckfield; on May 14 at Saf- 



soiitliof ScotlanJ, and which it is to be hoped will soon emljrace some por- 

 tions oflreland, have been organized. All the stations from which returns 

 are now sent, 1 have visited and given instructions to the observers so as to 

 ensure accuracy. The observations are publi.->hed daily in the Daily News 

 newspaper. If this system be continued some time valuable information 

 will be collected. 



