347 
calcium carbide had been added for each 1.000 cubic feet of space to 
be disinfected. — Ibid ., v. 47, p. 2110. 
Walcott, Henry P., is reported to have said that 5 ounces of for- 
malin with 15 ounces of water will suffice to disinfect 1,000 cubic 
feet of space in two hours. — Ibid., v. 47, p. 2031. 
Eichengrtin, A., describes a method for disinfecting by means of 
para form and an alkaline superoxide. — Ztschr. f. ang. Chem., Berl., 
1906, v. 19, part 2, pp. 1412-1415. 
Kister and Trautmann (Gesundheitsingenieur, 1906, v. 29, Xo. 6) 
describe an apparatus by means of which they are able to disinfect 
materials that would be injured by high temperatures. By means of 
a vacuum they reduce the boiling point of an aqueous solution of for- 
mic aldehyde to 80° C., and at this temperature, the authors assert, no 
injury is done to furs, leather goods, or glued wood. — Abstr. in 
Biochem. Centralbl., Leipz., 1906-7, v. 5, p. 254. 
Rosenberg. Paul, discusses the value of formaldehyde in internal 
therapeutics and the results of experimental research on the toxic 
action of formaldehyde. — Therapist, Bond., 1906, v. 16, pp. 115, 116, 
134. 
Perdrix, L ., discussing the conditions under which formaldehyde 
undergoes polymerization, says that from the point of dew of disin- 
fection, the solutions of formol generate methanal only on evapora- 
tion of the solvent ; the excess of water, therefore, is, for the steriliza- 
tion of germs, rather an obstacle than an adjuvant. The results of 
his experiments have a practical interest which merits attention. — 
Compt. rend. Soc. cle biol., Par., 1906, v. 61, pp. 65, 66. 
The same author describes an apparatus for the rapid and dry 
disinfection of solid objects. He also discusses the action of meth- 
anal on microbic germs at high temperature. — Ibid., v. 61, pp. 67-70. 
Bennette, J. T., (Dent. Bee., Lond., 1905) discusses the use of 
formaldehyde in dental therapeutics. He recommends 2 to 3 per cent 
solutions, 1 per cent in mouth washes, and 10 per cent for sterilizing 
instruments. — Dental Cosmos, Phila., 1906, v. 48, p. 114. 
Buckley, J. P., uses a mixture of cresol and formalin in the treat- 
ment of putrescent pulps. — Ibid., v. 48, pp. 537-544. 
Dorr, P. P., uses solidified formaldehyde with gratifying results. 
(Abstr. from Dental Brief, April, 1906.) — Ibid., v. 48, p. 614. 
Additional references on the use of solution of formaldehyde will 
be found in the Index Medieus and the J. Am. M. Ass. 
LIQUOR MAGNESII CITRATIS. 
Xagle, F. S., discusses the solution of magnesium citrate, presents 
a formula, and outlines the method of making a solution which he 
