ISO Dr C. G. -Gmelin's Analysis of Ci n n a m on-. do n c. 
Small particles of a green colour were imbedded in it, which 
were found to consist of phosphate of lime, with some carbonate ' 
of lime. 
The phenomena of cinnamon-stone, subjected to the action of 
tne blowpipe, were found to be the same as those described by 
Berzelius in his treatise on that instrument. Its specific gra- 
vity was ~ 3-783 ; temp, -f 10 11. 0.778 grains were only 
employed to ascertain it, and hence it is probably too high. 
a. 1.53-5 grains of cinnamon-stone, in coarse pieces, left, after 
ignition, 1.530 gr. : 109 parts therefore would lose 0.326. 
b. 3.117 grains of the mineral very finely powdered, were 
mixed with five times its weight of carbonate of barytes, and 
ignited. The mass after ignition was loosely coherent, and of 
a greenish grey colour. It was dissolved in muriatic acid, and 
the solution evaporated to dryness in a water-bath, by a very 
gentle heat. The silica weighed after ignition 1.247 grains,. 
= 40.006 per cent. 
c. The liquor was then diluted with a large quantity of water, 
the barytes removed by sulphuric acid, and the sulphate of 
barytes well washed upon the filter with boiling water. The 
liquor was now concentrated by evaporation, by which gyp- 
sum was separated, which, after being washed upon the filter 
with cold water, and ignited, weighed 1.945 gr. = 25. 91 9 per 
cent, of lime. This gypsum was converted into carbonate of 
lime, by boiling it with a solution of subcarbonate of potash. 
The carbonate was entirely dissolved in muriatic acid with ef- 
fervescence, and the salt thus formed had all the characters of 
muriate of lime. 
d. The gypsum having been removed, the liquor was preci- 
pitated by caustic ammonia, and quickly filtered. The lime 
still contained in it was thrown down by oxalate of ammonia. 
The oxalate of lime afforded by ignition 0.223 gr. of carbonate 
of lime — 4.034 per cent, of lime. 
c. The liquor was then evaporated, and the residue ignited. 
There remained a fused salt weighing 0.034 gr. of carbonate of 
lime = 4.034 gr. It was precipitated by muriate of platina, 
and was therefore sulphate of potash. These 0.034 gr. indi- 
cate 0.589 per cent, of potash. 
f. The precipitate thrown down by caustic ammonia w r as dis- 
solved in muriatic acid, and digested w T ith a considerable ex- 
