267 
SODII BICARBONAS. 
Havenhill, L. D., reports that of 10 samples of sodium bicarbon- 
ate examined only 4 gave clear solutions in water and conformed 
strictly to U. S. P. requirements. Four of the remaining samples 
contained an excess of normal carbonates. — Proc. Kansas Pharm. 
Ass., 1905, p. 92. 
Weathers, L. C., has examined 75 samples of sodium bicarbonate, 
the majority of which he found to be only fair. He points out that 
the amount of acid required to neutralize them was almost invariably 
high and concludes that all samples contain some normal carbon- 
ate. — Proc. Massachusetts Pharm. Ass., 1905, p. 101. 
Casamada (Rep. de Pharm.) outlines a simple method for the 
estimation of sodium bicarbonate, based on the behavior of the bicar- 
bonates and the carbonates to the different indicators. He titrates 
with normal HC1, using first phenolphthalein and then methyl orange 
as indicators. — Pharm. Ztg., Berlin, 1905, v. 50, p. 751. 
Luckey, Benj., recommends the use of sodium bicarbonate as a 
mouth wash; one teaspoonful in an ordinary glass of tepid water, 
three or four times a day.^ — Dental Cosmos, Phila.. 1905, v. 17, p. 522. 
SODII BORAS. 
Lloyd, John Uri, points out that, owing to competition in prices, 
trade borax is found to vary in composition from sodium bicarbon- 
ate, nearly pure, to borax mixed with only a moderate amount of 
sodium bicarbonate. Seemingly the amount of the admixture de- 
pends upon the price the drug commands, and the efficiency of the 
officials and the adulteration laws of the locality in which the prepa- 
ration is sold. — Pharm. Review, 1905, v. 23, p. 299. 
SODII BROMIDUM. 
Caspari, Charles E., reports on 18 samples of sodium bromide, 10 
of which satisfied the official requirements, 1 contained an excess of 
sodium chloride, one contained metallic impurities, and 3 contained 
dirt. — Proc. Missouri Pharm. Ass., 1905, p. 75. 
SODII CARBONAS. 
Lyons, A. B., points out that there is an inconsistency between the 
statements of the solubility of sodium carbonate monohydrated and 
that of the sodium carbonate at the former pharmacopoeia. — Proc. 
Am. Pharm. Ass., 1905, v. 53, p. 260. 
Hensel, Samuel T., discusses the production of sodium carbonate, 
the several processes in use at the present time, and includes an 
