137 
. CALX. 
Lyons, A. B., in discussing “ Calx ” says: 
No quantitative test is proposed. None is really needed — neither is the 
purity requirement of 90 per cent needed — as it is to be made from white 
marble or from the purest varieties of calcium carbonate. — Proc. Am. Pharm. 
Ass., 1905, v. 53, p. 261. 
Kebler, Lyman F., found calcium oxide which contained siliceous 
matter, aluminum, iron, and chloride. — Ibid., p. 183. 
Bunge (Ztschr. f. Biol., v. 15, pp. 532-539) records the content of 
calcium oxide and of iron found in the several substances used as 
food. — Nouv. Kem., 1905, v. 21, pp. 91-94. 
CALX CHLORINATA. 
Francis, John M., speaking of the titration of chlorinated lime, 
says : 
It would seem that the insoluble lime residue interferes in some way with 
the titration and the process will be improved by allowing the 1,000 cc. of 
aqueous solution to stand for a few minutes, then decanting and titrating, as 
directed, 100 cc. of the clear supernatant solution. Of 23 consignments, 
amounting to over 30,000 pounds, all assayed over the U. S. P., VIII, mini- 
mum requirement. The highest was 38.5 per cent and the lowest 30.4 per 
cent and the average 34.4 per cent of available chlorine. Chlorinated lime 
deteriorates rapidly and care must be exercised in purchasing small quanti- 
ties and in observing that requisitions be not filled from old stock. — Bull. 
Pharm., Detroit, 1905, v. 19, p. 363. 
Kebler, Lyman F., publishes the following figures on chlorinated 
lime : < 
Samples in tins, 21 per cent to 26 per cent. Fresh goods, 33 per cent to 37 
per cent, and one sample of American manufacture, 42 per cent. — Proc. Am. 
Pharm. Ass., 1905, v. 53, p. 185. 
The committee on adulterations reports one sample of chlorinated 
lime which contained but 12.6 per cent of available chlorine instead of 
the 30 per cent required by the U. S. P. — Proc. Michigan Pharm. Ass., 
1905, p. 78. 
Alcock, F. H., found that six samples of chlorinated lime varied 
in content from 15.9 to 30.1 per cent of available chlorine. He sug- 
gests that — 
an addition of quicklime might tend to preserve it, or, as it has been shown 
that the soda chlorinata keeps better, an admixture of some sodium salt. — 
Pharm. J. Lond., 1905, v. 21, p. 520. 
Smith, Bernard F., reports an investigation of commercial samples 
of bleaching powder in which he shows that even under the most 
favorable conditions this article will deteriorate more or less rapidly. 
The writer concludes that the purchaser should insist upon getting 
