Sir Thomas Brisbane's Meteorological Tables. 



75 



Art. X. — On the Meteorological Tables kept in 1822 at 

 Macquarie Harbour and HobarCs Town in Van Diemeri's 

 Land, and transmitted to the Royal Society of Edin- 

 burgh. By his Excellency Sir Thomas Brisbane, K.C.B. 

 F.R.S.* " 



1 he Meteorological Registers now laid before the Society 

 were kept in the year 1892, and contain regular observations 

 on the barometer and thermometer, and on the general state 

 of the weather. 



The state of the barometer and thermometer was marked 

 jive times a day, or every three hours, from 9 o'clock in the 

 morning till 9 at night. Had the observations been con- 

 tinued during the night at 12 o'clock, and at '3 and 6 in the 

 morning, the average of these would have given a very cor- 

 rect measure of the mean temperature of the day ; but as 

 the thermometer was not marked at these hours, it becomes 

 necessary to reject entirely the observations made at noon, 

 and at 3 and 6 o'clock in the evening, and to deduce the 

 mean temperature from those made at 9 o'clock in the morn- 

 ing, and 9 o'clock in the evening. 



By this process, the propriety of which cannot admit of 

 the slightest doubt, we obtain the following mean monthly 

 temperatures for Hobart Town and Macquarie Harbour : 



Mean, 



52°.42 



55°. 44 



* These valuable Tables have been deposited in the Library of the lloyal So- 

 cicty. As they are too bulky for publication, the following Report upon them 

 was drawn up by the Secretary, and read to the Society. 



