MiJTEOROLOGY FOR DECEMBER, 1S7S. 



Private Observatory, Hocart Tow^\ 



Latitude 42° 52' 13'' S. ; Longitude 9h. 49m. 29.2s. E. 

 (Registered for the Royal Society of Tasmania.) 



Tbe Meteorological form brought into use at the beginning 

 .of 1S76 differs in some respects from the former one. It has 

 'fteen adopted mth tlie view of assimilating the Hobart Town 

 records more closely with those of stations in Europe, America, 

 etc., in order to "co-operate in a system of International 

 Aletcorology. Readings are added from the centigrade thcr- 

 morceter, that being the instrument generally used on the 

 continent of Europe. 



The mean is in all cases taken from tiie sums of the two 

 dnily repsters, not from the maximum and minimum. 



Tlie directioa of the wind is registered from currents at a 

 height of 92 feet above sea level, and its force in lbs. per 



jnare foot. 



The relative quantity cf rain that fell under the different 

 innds is registered each morning at 7-30 a.m. 



The 35 years' standard tables are used for obtaining the 

 aifference from average. 



FRANCIS A:3r>0TT, F.R.A.S., etc. 



Time of leafing, flowering, and fruiting of a few standard 

 plant? in the Botanic Gardens during the month of De- 

 cember, 1878 :— 



isIk' P*"^^ bunch Red Currants ripe. 



istli. Common Privet commencing to flower. 



21st. First bunch Black Currants ripe. 

 21th. Mclia A::€(hracl> commencing to flov,er. 

 27th. Doyenne d'Ete Pear commencing to ripen. 

 30th. Juneating Apple commencing to ripen. 



F. ABBOTT, Jux., Superintendent. 



Results of obser\ anions taken at New Norfolk December, 1878, 

 in accordance with new forms, at 7 30 a.m. and 4 30 p.m. :— 



Barometer.— Mean of two daily readings, corrected and 

 reduced, 29 780 inches. 



Thermometer.— Mean of two ditto, 58-40 deg. 



,, ]\lean of max. and min. in .shade, 57 83 deg. 



Dew Point.- Mean po?ition of two ditto, 47 -.-^8 deg. 



Elastic Force of Vapour.— INIean of two ditto, -333. 



Humidity of Air.— Mean of two ditto, 'GS. 



Solar Intensitv.— Mean of max. temperature, 12610 deg. 



Terrestrial Radiation.— Mean of min. temperature, 41-00 deg. 



Rainfall —2-90 inches. Total for the year, 27-83 inches; 

 total for 1877, 22 (i3 inches; ditto for 1876, 23-54 iriches ; 

 ditto for 1875, 28-17 inches ; ditto for 1876, 23-04 inches. 



Evaporation.— 5-45 inches, in excess of rainfall, 2-49 inches. 



Clouds.— jN'ean of two daily registers, 5-32. 



Ozone.— Mean of two ditto, 0-9J. 



E. W. SuooBRiDGE, Bushy Park. 



