Ledjing, Flowering, and Fruiting of a feio Standard Plants in the Royal Society's Gardens 

 during the month. 



12th. — Medlar commencing to ripen. 



18th. — Coronilla glauca commencing to flower. 



20th. — Photinia serrnlata ditto ditto. 



24th.— Diosnia alba ditto ditto. 



2.5th.— Spirea prunifolia ditto ditto. 



26th.— Ailanthus glandulosus leaves all fallen. 



Barometer mean, 30 'OTlin., being 224in. above the average. 

 Temperature mean, 52-98°, being 270° above the ditto. 

 Solar intensity mean, 78-31°, being 3T)G° below the ditto. 

 Dew point mean, 45 '0', being 152° above the ditto. 

 Humidity of air mean, '78, being '02 per cent, above the ditto 

 Elastic force of vapour mean, "311, being '009 per cent, above the ditto. 

 Total amount of rain, 0'6t)in., being llSin. below theiditto. 

 Increase of spontaneous evaporation on rainfall, O'GOin. 



Mean amount of ozone, 5-3Gin., being 144 of cliromatic scale below the ditto. 

 A small amount of electricity all through the month. 



The early part of the month was notable for a large amount of cloud, and a frequent 

 register of calms, with dewy mornings, and low vapour. 

 Snow on the apex of Mount Wellington on the 29th. 

 On the 30th the mountain and low hiUa were capped with snow. FRANCIS ABBOTT. 



NOTES ON THE METEOROLOGY AND MORTALITY OF 

 THE MONTH OF MAY, 1871. 



By Dr. E. Swarbreck Hall. 



The character of the weather during the month was in almost every aspect 

 abnormal. Very high atmospheric pressure, very calm, very mild, very 

 cloudy, little rain, little ozone, little sunshine, little electricity. The deaths 

 were considerably below the average of the previous 14 years, falling princi- 

 pally ujion aged and infirm people, nearly one-half of the deaths being 

 at and above 60 years old, the oldest 84. Under 20 the deaths were remarkably 

 few. 



Atmospheric pressure mean, 30*071, was -f- '224 above the 25 years' adopted 

 standard mean. Only three Mays in the previous 30 years have had higher 

 means. The maximum was 30 "386 on the 24th ; the minimum, 29 "4 13, on the 

 29th, the month's range consequently "973 of an inch. The greatest movement 

 in any 24 hours was a rise of + '389 of an inch on the 30th. On only 7 other 

 days did it exceed one-fifth of an inch. Steady high barometrical pressure 

 with moderate fluctuations, and small extreme range, characterised this month. 



TFijtcZ /o/'ce, 16 "64 lbs, was —21*21 lbs. below the May average. North-west 

 winds were recorded 48 times out of the 93 observations, and had 10*66 lbs, 

 of the total foi-ce. The strongest wind had only 2*60 lbs. pressure to the 

 square foot ; it occurred on the 30th, and was from the north-west. Calms 

 were 52 in number being -f 9*20 above the average. 



Temperaturem.e!xn, 52*98 degrees, was -t-2*70 above the average. Only four 

 Mays, out of the previous 30, had a warmer mean. The maximum was 75 

 degrees on the 21st. The minimum 34 on the 14th. Wet-bulb mean was 

 49*30, being -1-2*22 above the average. 



Daily Range of Temperature had the mean of 16*32 degrees, being -hl*16 

 above the average. The greatest on any day wfis 33 degrees on the 20th. 



Solar Intensity mean, 78*31 degrees, was — 3*56 below the average, 

 owing no doubt to the cloudy character of the month. The maximum was 

 100 on the 21st, the minimum 57 on the 8th. 



Terrestrial Radiation mean, 41*15, was -f-l*84 above the average. The 

 lowest was recorded for the night, of the 30th, being 33 degrees. Often before 

 has it fallen below freezing point (32. ) 



Elastic force of Vapour mean, 311, was + 9 above the average. It ranged 

 from 503 on the 2nd, to 197 on the 15th. 



Humidity mean, 78, was 4- 2 above the average. 



Rainfall "66 of an inch, was— 1 *15 below the average. May 1870 was almost 



