L 433 ] 
XIX. Meteorological Observations made on Board Her Majesty's {hired) Bark Pagoda, 
from January 10 to June 20, 1845, between — 20° and —68° Latitude, and 0° and 
120° East Longitude. By Lieut. Henry Clerk, Royal Artillery. Communi- 
cated by Lieut. -Colonel Sabine, R.A., For. Sec. R.S., fyc. 
Received April 21, 1846, — Read May 28, 1846. 
A.S much interest has been taken of late in the state of the barometer in high south- 
ern latitudes, the Expedition sent last year from the Cape of Good Hope to com- 
plete the magnetical observations made by Sir James C. Ross in those latitudes, was 
supplied with a barometer and other meteorological instruments, and directed to 
make meteorological as well as magnetical observations. I have now the honour of 
laying before the Royal Society the observations made during that Expedition. 
They were taken daily at the hours of 3 and 9 a.m., 3 and 9 p.m., noon, and mid- 
night, by the officers of the ship during their respective watches. Nothing could 
exceed the zeal with which the officers entered into all the objects of the Expedition, 
and the attention and care they took in the observations they had to make. 
The following are the instruments with which the Expedition was furnished 
One marine barometer, 'i 
Three thermometers, by J. Newman, London. 
One Daniell’s hygrometer, J 
Ether in metal bottles. 
The barometer was of the usual construction, the case being of wood and the scale 
of ivory, read off by a vernier to '0] of an inch ; the mercury was contained in a 
leathern bag. It was compared with the standard barometer at the Magnetic Ob- 
servatory, Cape of Good Hope, both before and after the Expedition ; and also with 
the Royal Society’s barometer on its return to England. The following are the com- 
parisons : — 
Cape of Good Hope. — January 1845. 
Standard 
Marine 
Marine below 
Barometer. 
Thermometer. 
Barometer. 
Thermometer. 
standard. 
inches. 
67-9 
inches. 
67-3 
inch. 
29*863 
29-733 
29-896 
68-1 
29-785 
67-5 
29-949 
69-4 
29-834 
69-1 
> -115 
30-001 
70-4 
29-884 
70-4 
30-067 
69-0 
29-948 
68-5 
30-090 
69-4 
29-975 
68-8 
J 
