507 
Fullerton, James, recommends a formula for a petrolatum cold 
cream which has been thoroughly tried and exploited successfully in 
a commercial way. — Drug. Circ. & Chem. Gaz., N. Y., 1906, v. 50. 
p. 162. 
UNGUENTUM DIACHYLON. 
Cruse, E., reviews the various suggestions for the improvement of 
diachylon ointment and points out that diachylon ointment is not 
expected to be absorbed but is used solely for protection. On this 
basis he recommends that mineral oil be used in the making of this 
ointment, in place of the olive oil directed in the pharmacopoeia. — 
Pharm. Ztg., Berl., 1906, v. 51, p. 906. 
Buth, F., discusses the preparation of diachylon ointment and out- 
lines a method for the preparation of small quantities. Suggests 
that the occasionally complained of irritating properties of this 
ointment may be due to the contained oil of lavender, which latter, 
he believes, also acts as oxygen carrier and facilitates rancidity. — 
Pharm. Post, Wien, 1906, v. 39, p. 39 ; also p. 56. 
An editorial discusses proposed variation from the official formula 
for diachylon ointment which have been proposed with the object of 
producing a more stable ointment. It is pointed out that while an 
ointment made with paraffin oil, for example, may be satisfactory, 
the dispensing of such a preparation is not permissible unless spe- 
cifically sanctioned by the prescribing physician. Attention is also 
directed to the previously made statement that diachylon ointment 
should not be dispensed after being on hand from six to eight Aveeks. — 
Pharm. Ztg., Berl., 1906, v. 51, p. 30. (See also p. 190.) 
UNGUENTTJM HYDEARGYEI. 
Francis, John M., thinks the pharmacist must exercise care to 
produce an ointment which shall assay 48 per cent Hg. Some little 
experimentation may be needed to make the ointment of proper con- 
sistency. — Bull. Pharm., Detroit, 1906, v. 20, p. 232. 
Kauffeisen, L., points out that mercurial ointment can be prepared 
extemporaneously by triturating 50 parts of mercury with 10 of lano- 
lin and subsequently incorporating the mixture with the remaining 
fat. — Pharm. Ztg., Berl., 1906, v. 51, p. 759. 
The inspectors of pharmacies assert that mercurial ointment has 
been found of inferior quality due to the use of poor lard or the 
inefficient extinction of the mercury. — J. cle pharm. d’Anvers, 1906, 
v. 62, p. 84. 
Bupp, E., outlines a method for. the determination of mercury in 
mercurial ointment by dissolving the metal in nitric acid ; the result- 
ing filtered and cleared solution is then titrated with potassium 
sulphocyanide. — Arch. d. Pharm., Berl., 1906, v. 244, pp. 538, 539. 
