Buffon's Natural History. Volume 10 (of 10) / Containing a Theory of the Earth, a General History of Man, of the Brute Creation, and of Vegetables, Minerals, &c. &c

by comte de Georges Louis Leclerc Buffon

So as to be held in the hand for half a second.			To actual temperature.
Gypsum in	8		In	24
Porcelain in	8	1/2	In	25
Glass in	2		In	26
Gres in	10		In	32
Gold in	14	1/2	In	45

Bullets of silver, common marble, hard stone, white marble, and soft calcareous stone of Anieres, near Dijon, were heated like the former, and cooled,

So as to be held in the hand for half a second.			To actual temperature.
Soft calcareous stone in	8		In	25
Hard stone in	10		In	34
Common marble in	11		In	35
White marble in	12		In	36
Silver in	13	1/2	In	40

The whole of these experiments were made with the utmost care and attention, not only by myself but in the presence of several persons, who also endeavoured to judge of the first degree of temperature by holding the bullets for half a second in their hands, and the relations of which are more exact than those of the actual temperature, because that being variable the result must sometimes vary also.

With a view to avoid that prolixity which would necessarily attend the continual repetition in a comparative statement of the refrigeration of these different bodies, we have connected them in a general table, and taking 10,000 for the standard of comparison, their differences may be seen at one view.

[A TABLE]
OF THE
Relations of different Mineral Substances.