Summary of a Meteorological Register for 1863. 47 



30.719 inches, a rise of 1.513 inches. The quantity of water 

 that fell in rain and snow was greater than in any except in 1859 

 and 1862. Kain fell on 10, and snow on 6 days. The prevail- 

 ing wind was north-east. Lunar haloes were observed four y 

 times, and shooting stars once. 



February was warmer than any February, except in 1857 and 

 1859. The temperature was variable, for at 9 p.m. of the 1st 

 the thermometer indicated 45°, and at "9 p.m. of the 4th it was 

 6 Q . At 2 p.m. of the 6th it had risen to 47.5°. The barometer 

 rose from 29.756 in. at 7 a.m. of the 2d to 30.912 in. at 9 p.Mof 

 the 4th. It fell again from 7 a.m. of the 18th to 7 a.m. of the 

 20th from 30.350 to 29.215 in., then rose again, so that at 7 a.m. 

 of the 22d it stood at 30.515 in. The quantity of water that fell 

 was greater than in any other February. Kain fell on 10, and 

 snow on 5 days. The prevailing wind was north-east. 



March was colder than any March, except in 1856, though 

 nearly the same as in 1855. The weather was as fickle as usual, 

 but no great changes. More water fell than in any March, 

 except in 1859. Snow fell on 11, and rain on 10 days. The 

 prevailing wind was west. Lightning occurred on the 25th. 

 A parhelion, a solar halo, and the zodiacal light, were each 

 observed once. 



April was about the average temperature. The mercury in 

 the thermometer varied, but not greatly ; in the barometer it 

 fell .937 inch, from 2 p.m. of the 21st to 9 p.m. of the 24th. 

 The quantity of rain was about the average. Snow fell in slight 

 quantities on 3 days, and rain on 14. The aurora-borealis, 

 also a solar halo, a lunar halo, and a parhelion, were each 

 noticed once. 



May was warmer than any May except in 1859 and 1862. 

 The temperature was variable, and so was the mercury in the 

 barometer till the 29th, when it commenced falling, and con- 

 tinned to do so till 2 p.m. of the 31st, when it was at its lowest 

 point of the month. The quantity of rain was near the average. 

 Bain fell on 12 days. The prevailing wind was south-west. 



