178 Mr. J. Davy’s Account of some Experiments on the 
place, with violent ebullition and production of dense reddish 
fumes. I have used other specimens of oil of turpentine, ex- 
pecting a similar inflammation, but without its occurrence, 
though there has been in every instance a considerable action. 
The mixture of the two being made in a retort connected with 
mercury, no gas was generated, oxide of tin appeared to be 
formed, and a viscid oil was produced, which, like the fat oils, 
left a permanent stain on paper, and had little smell or taste, 
and which, digested with alcohol, imparted something which 
occasioned a permanent cloudiness on the admixture of water, 
and an odour to me not unlike that of artificial camphor. The 
action of the liquor of Libavius on the oil of turpentine is 
worthy of further inquiry. The preceding account of it, I am 
aware is very incomplete ; but I trust it will serve to call the 
attention of chemists to a subject so curious. 
To discover the proportions of tin, and consequently of chlo- 
rine in stannane and stannanea, I have taken advantage of the 
superior affinity of zinc for chlorine, by means of which the 
tin is separated in its metallic state. 
6 9.5 grains of stannane, made by heating in a glass tube with 
a very small orifice, an amalgam of tin with calomel, were, 
w'ith the exception of two grains of metallic mercury, appa- 
rently a mere mechanical mixture, entirely dissolved in dilute 
muriatic acid. A slip of clean zinc, immersed in this solution 
decanted from the residual mercury, quickly precipitated the 
tin in a very beautiful plumose form ; and this precipitate col- 
lected on a filter, and well washed and dried and fused into 
one globule under a cover of tallow in a small glass tube, 
weighed 42 grains. 
