[228] Puckner, W. A., and Hilpert, W. S.: Veronal-Sodium and Medinal, J. A. M. A. 52:311 (Jan. 23) 1909; Rep. A. M. A. Chemical Lab., 2:13.

[229] Since this was written, the Council on Pharmacy and Chemistry has also accepted “Barbital-Sodium Abbott.”

[230] No short, scientific name has been given for this substance although several are under consideration.

[231] Certain chemical tests are described by E. H. Rankin, Indian J. M. Res. 4:237, 1916; also Chem. Abst. 10:524. Other references are Schmidt: Pharmazeutische Chemie 2:990, Beilstein II, (403). Arends, G.: Neue Arzneimittel und pharmazeutische Spezialitäten, Ed. 4, 1913, p. 271.

[232] Kennert: Chem. Zentralbl. 2:556, 1897.

[233] Doebner and Gieseke: Ann. d. Chem. (Liebigs) 240:291, 1887.

[234] The validity of this patent is to be doubted.

[235] Attempts were made to make salts of phenyl­cinchoninic acid with metals such as copper, mercury, barium and calcium, and also the chloroplatinic acid or periodid addition products. Reliable quantitative results could not be obtained.

[236] This corresponds to “diluted alcohol, U. S. P.”

[237] The ethyl acetate was Merck’s product (redistilled), stated to contain 81.6 per cent. of ethyl acetate, 10 per cent. alcohol and alcohol derivatives.