METEOROLOGY FOR APRIL, 1870. 



Private Observatory, Hobart Town. 



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Leafing, Flowering, and Fndting of a few Standard Plants in the Royal Socitty's 

 Gardens during the month. 



10th — Leaves of Elm (Ulmus campestris) commencing to fall. 



15th — Cliinese Chrysanthemum commencing to flower. 



20th — Seeds of Hornbeam (Carpinus betulus) lipe ; leaves of Mountain Ash commenc- 

 ing to fall. 



25th— Ditto of Black Mulberry ditto ditto. 



Barometer mean, 30045 in., being 0154 in. above the average. 



Temperature mean, 57 21', being 218° above the ditto. 



Solar intensity mean, 8613°, being 568' below the ditto. 



Dew point mean, 493", being 219' above the ditto. 



Humidity of air mean, 81, being 05 per cent, above the ditto. 



Elastic force of vapour mean, 374, being 149 percent, below the ditto. 



Total amount of rain, 4-25in., being 2-47in. above the ditto. 



Increase of spontaneous evaporation on rain fall, lOOin. 



Mean amount of ozone, 7 01, being 002 of chromatic scale above the ditto. 



A feeble amount of atmospheric electricity all through the month. 



The apex of Mount Wellington covered with snow on the 23rd. 



A great number of calms registered, and a small amount of wind force. 



FRANCIS ABBOTT. 



