317 
; legitimately vary between 75.50 per cent and 77.32 per cent. — Pharm. 
J., Loncl., 1906, v. 23, p. 103. 
T} r rer, Thomas, points out that looseness of definition or want of 
clearness in description may be sources of trouble and probably harm. 
The formula HgClNH 2 is that on which evidently the percentage of 
mercury is calculated. It is not founded on experimental work. He 
calls attention to the unstable character of the precipitate and asserts 
that thorough washing, as prescribed in the pharmacopoeia, tends to 
increasing deterioration of the color of the precipitate. He believes 
76 to 77 per cent to be a reasonable requirement for mercury con- 
tent. — Year Book of Pharmacy, 1906, pp. 302-301. 
The Ph. Brit. Committee of Reference in Pharmacy report on 
ammoniatecl mercury says the standard of mercury is too high, and 
should not be higher than 77 per cent. This preparation should be 
dried at not over 30° C. — Chem. & Drug., Bond., 1906, v. 69, p. 863. 
Schmidt, Ernest, presents a discussion of the physical and chemical 
properties of ammoniated mercury, and points out the complex 
nature of its composition. — Pharm. Zentralh., 1906, v. 47, p. 804. 
Bauer, Hugo, reports experiments that were conducted to determine 
the solubility of ammoniated mercury in acetic acid, and points out 
the irregularity with which complete solution is obtained. — Pharm. 
Ztg., Berl., 1906, v. 51, p. 930, 931. 
Wiebelitz, H., points out that it will be necessary to define more 
accurately the nature and the conditions necessary to promote com- 
plete solution of ammoniated mercury in acetic acid. — Pharm. Ztg., 
Berl., 1906, v. 51, p. 1004. 
Caspari, Chas. E., reports three samples examined — one contained 
mercurous compounds, two carbonate. — Proc. Missouri Pharm.' Ass., 
1906, p. 100. 
Fernan, Albert, reports finding a sample of ammoniated mercury 
containing 2,88 per cent of ammonium chloride, with traces of sul- 
phate and of iron. — Ztschr. d. allg. oesterr. Apoth.-Ver., Wien, 1906, 
v. 44, p. 79.. 
Evans Sons Lescher and Webb report on five samples of mercuric- 
ammonium chloride which were examined for mercury by the hypo- 
phosphorous acid method, and gave the following amounts: (1) 76 
per cent, (2) 77 per cent, (3) 76.6 per cent, (4) 77.8 per cent, (5) 78.4 
per cent. — Analytical Notes, for 1906, 1907, p. 24. 
HYDRARGYRUM CUM CRETA. 
Caspari, Chas. E., reports two samples mercury with chalk exam- 
ined. Both contained excess of mercuric and mercurous oxides. — 
Proc. Missouri Pharm. Ass., 1906, p. 101. 
