464 Mr* Henry on the Natural Hijlory , &c. 
The late Sir Torbern Bergman has purfued 
the fubjedt with great fuccefs. He has fatisfac» 
torily explained fome of the phenomena of the 
procefs for the preparation of Magnefia; has 
afcertained its affinities with all the acids, to 
many of which Dr. Black had not extended his 
inquiry, and defcribed the Salts formed by their 
union with this bafis. And he has given an 
account of the refult of various experiments, 
made with a view of determining the degrees of 
fufibility, which Magnefian Earth exhibits, 
when expofed to a ftrorig heat, either mixed with 
other earths, or per Je.* 
water, for the firft wafhing, and of throwing the mixture, 
of the Saline Liquors, into boiling water, and continuing 
the co&ion, inftead of boiling the mixture, previous to the 
addition of the water, have been adopted, in the later 
editions of the Edinburgh Pharmacopoeia. 
* This excellent Chemift has done me the honour to 
quote my difcoveries relative to the difference of the 
'fepticity of Magnefia Alba, when applied to flefh and to 
bile; and fubjoined my name in a marginal note to the 
paflage. He then proceeds, in the next paragraph, to 
cite the antifeptic properties in both cafes of Calcined 
Magnefia, and its power of rendering refmous fubflances 
foluble in water, in which paffage he has ufed my own 
words. Yet M. Fourcroy, and after him, his tranfiator 
Mr. Elliot, have mentioned M. Bergman, only, as the 
relator of the latter fa<fts, without noticing the author 
from whom he had taken them. My Effay was publifhed 
in May, 1773, whereas the date of that of Sir Torbern 
Bergman, which like moft of his other excellent Tra£ls, 
was written as a Thefis for one of his Pupils, is Decem- 
ber 23, 1774. 
