TIN. 
remains behind an amalgam of tin, covered with a crust 
of muriat of tin*. It had been long known that this 
liquid contained muriatic acid and tin; but Adet was 
the first who demonstrated that the tin was oxidated 
to a maximum, and that therefore the salt was an oxy 
muriat of that metal t; and his conclusions were after 
wards confirmed by Pelletiert. 
The white smoke constantly exhaled by this salt, pre 
pared according to the process of Libavius, has also 
been accounted for by Adet. The salt is nearly desti 
tute of water, and in this state it is exceedingly volatile. 
The vapour as it rises combines with the vapour of the 
atmosphere, and the smoke appears at the moment of 
the combination. When the salt is confined in a glass 
jar, either in moistened air or standing over water, it 
condenses gradually on the sides of the jar in the form 
of small crystals, having imbibed the water necessary 
for its crystallization from the air. When thrown into 
water, this substance produces heat, and at the same 
time dissolves if the quantity of water be sufficient. A 
det ascertained, that when 7 parts of water are mixed 
with 22 parts of fuming muriat, the mixture condenses 
into a solid mass. This mass melts like ice when ex 
posed to heat, and cóndenses again when cooled and a 
gitated. 
Oxy-muriat- of tin is capable of dissolving an addi 
tional dose of tin without effervescence or the exhala 
tion of gas, and by that means is converted into muriat 
of tin. The new portion of tin in this case deprives 
the tin of the oxy-muriat of its second dose of oxygen. 
Adet, however, found, that this solution did not suc 
* Rouelle. 
Ann. de Chim. i. 5. 
t Ibid. xii. 225) 
29 
Chap. III.