Sir Benjamin Thompson’s Experiments, See. 24.1 
were expofed 48 hours, upon a table placed in the middle of 
the room, the air of the room being at the temperature of 
45° F. ; after which they were carefully weighed (in the room) 
and were found to weigh as under mentioned. 
They were then removed into a very damp cellar, and placed 
upon a table, in the middle of a vault, where the air, which 
appeared by the hygrometer to be completely fatu rated with 
moifture, was at the temperature of 45 0 F. ; and in this fitua- 
tion they were fuffered to remain three days and three nights, 
the vault being hung round, during all this time, with wet 
linen cloths, to render the air as damp as poffible, and the 
door of the vault being fhut. 
At the end of the three days I entered the vault, with the 
balance, and weighed the various fubftances upon the fpot, 
when they were found to weigh as is expreffed in the third 
column of the following table. 
Weight after Weight after Weight after be- 
The various fubftances. being dried 24 being expofed ing expofed 72 
hours in a 48 hours in a hours in a damp 
hot room. cold, uninha- cellar, 
bited room. 
Pts. 
Pts. 
Pts. 
Sheep’s wool - ~ 
1000 
— 
1084 
1163 
Beaver’s fur - - 
1000 
- 
1072 
— 
1125 
The fur of a Ruffian hare 
1000 
- 
1055 
- 
1 1 *5 
Eider down — — 
1000 
— 
1067 
- 
1 1 12 
f Raw, Angle thread 
1000 
— 
1057 
- 
II07 
Silk | Ravelings of white taffety 
1000 
- 
1054 
- 
II03 
T . f Fine lint — 
Linen J 
1000 
- 
1046 
- 
1102 
f Ravelings of fine linen 
1000 
— 
1044 
mm 
1082 
Cotton wool — 
Silver wire, very fine, gilt, and"! 
1000 
*043 
IO89 
flatted, being the ravelings of 
gold lace — J 
Vol. LXXVII. 
j> IOOO 
Nn 
1000 
I COO 
