Postscript.—Subsequently to the reading of this paper before the Pharmaceutical Society, I have received from Mr. William Huskisson, jun., a specimen of pink chloroform, which, he informs me, owes its remarkable color to the presence of manganese, derived from peroxide of manganese employed in the purification of chloroform, as recommended by Dr. Gregory, (see Pharmaceutical Journal, vol. ix., p. 580.)
Mr. W. Huskisson, jun., tells me, that he has observed in his specimen neither the alterations of color nor the crystals met with in the specimen sent me by Mr. Grattan.
The chairman stated, that he had never, in the various specimens of chloroform, of which his firm had always a large quantity in stock, observed the pink color described by Dr. Pereira, nor had he ever seen any crystals deposited in the bottles, but he would have a more minute examination made with the view of ascertaining whether such existed. When the chloroform was first drawn over, and before it was purified, it frequently possessed more or less of a brown color, but this was quite distinct from the character described in the paper which had just been read.
Mr. D. Hanbury observed, that the use of manganese had been suggested in the process for purifying chloroform, and its presence might in this way be accounted for.
Mr. Barnes thought it desirable that the decomposed chloroform should be examined for formic acid. Although constantly subject to decomposition, no satisfactory explanation of the nature of the change had yet been afforded.
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REPORT PRESENTED TO THE ACADEMY OF MEDICINE OF PARIS, ON THE SUBSTITUTION OF AN ARTIFICIAL IODURETTED OIL FOR COD LIVER OIL. By a Commission composed of Messrs. Gibert, Ricord, Soubeiren and Guibourt.
On the 20th of August, 1850, the Academy appointed a commission, composed as above, to whom was submitted a memoir, by M. Personne, entitled, “Researches on the Cod-liver and Skate Oils; and on the preparation of an ioduretted oil, by which they may be replaced as Medicinal Agents.” A note was also submitted to us on the same subject, from M. Deschamps, and another from M. Marchall, the latter of which claimed for the author priority in the employment of ioduretted oil of almonds, as a substitute for cod-liver oil.