434 Scientific Intelligence. (June, 
From these three experiments it follows that the constituents of 
this salt are as follows :-— 
RSE Het si ekce cial era atareve ots aieyo clays EPO 
Sulphuric acid': (3 fesiiewk sieve ah ee BBL 
Bian cain 2.5, Shs tie 8 ites whe See 
Seda) seriigguele ) wintiadeks dust ut, 200OE 
—— 
10°00 
But 1:62 magnesia require for saturation 3°24 sulphuric acid; and 
06 soda require for saturation ‘075 sulphuric acid. Hence the 
constituents of this salt must be as follows :— 
Water eeeerae @e¢eewee ee aev ee eeeeesee 50 
Sulphate of magnesia ........ 
Sulphate of Somar gasers..'s. 0%... seeker dao 
99°95 
eeeeeweeeeeoe ee eaeeaesrn 0:05 
——— 
100-00 
The quantity of sulphate of soda is so small, that probably it is 
not combined chemically with the Epsom salt. The proportions indi- 
cate nearly 42 atoms of sulphate of magnesia to one atom of sul- 
phate of soda. The form of the crystals is that of Epsom salt. 
No salt precisely the same with this has been hitherto described 
by mineralogists, I do not know, indeed, that the salt called by 
mineralogists native Epsom salt has ever been analyzed; but its ex- 
ternal characters differ very materially from those of the salt which 
I have described. The native salt called reissite by Karsten differs 
materially from our salt, both in its characters and composition— 
two-thirds of it being Glauber’s salt, and not quite one-third of it 
sulphate of magnesia. Besides, it contains a little muriate of 
magnesia and a little sulphate of lime, both of which are wanting 
in our salt. . 
‘Loss ereereeeeeee 
VII. Death of Dr. Odier. 
Dr. Odier, Professor of Medicine at Geneva, and fellow of 
various learned societies, died at Geneva on April 14, of an angina 
pectoris, at the age of 69. His long and very extensive practice, 
his various works, all of them highly esteemed, and his different 
courses of lectures, have established his reputation. His death has 
occasioned the most lively regret. The public loses in him not only 
a skilful physician, but a zealous citizen, always ready to perform 
the painful and gratuitous functions to which he was called, and for 
which he was adapted by his talents, his knowledge, and his un- 
common skill. His character and the sweetness of his temper ren- 
dered him dear to society. His family and friends are inconsolable 
for his loss. 
2 
