384 
TO CORRESPONDENTS. 
The 1 British Pharmacopoeia .’—In reply to several correspondents, we are authorized 
to state that the ‘ British Pharmacopoeia’ will appear early in January next. The work 
will be published by the “General Council of Medical Education and Registration,” 32, 
Soho Square. 
L. M. ( Wake field). — Sugar of Milk is generally made by evaporating whey to a 
syrupy consistence, when the sugar crystallizes out, and is afterwards purified with animal 
charcoal. 
Inquirer (Cardigan).—We know nothing of the oil mentioned by our correspondent. 
16. I. B .—See 4 Pharmaceutical Journal,’ vol. x. pp. 115, 168, 236, 297, and 340 ; and 
the papers by Professor Bentley, “On the Cultivation of Medicinal Plants at Hitchin,” 
Pharm. Journ. vol. i. 2nd series, pp. 275, 323, 414, and 515. 
A Student. —Apply to the Secretary of the Pharmaceutical Society, giving name and 
address, and he will forward you the required information. 
A Registered Apprentice (Gloucester).—Bentley’s ‘ Manual of Botany,’and Royle’s 
i Materia Medica.’ 
Index. —The Index to the first fifteen volumes of the 4 Pharmaceutical Journal and 
Transactions ’ may be obtained of the Secretary, at the reduced price of 2s. Gd. 
“ A Young Chemist .”—The substance sent for examination is Naphthaline. 
“ A Lincolnshire Member.”—Black Writing-ink. See vol. vii. p. 183, and vol. xii. p. 69. 
C. II. E. M. (London).—(1) We know of no better method than that in ordinary use. 
(2) The substance referred to is, we believe, a mixture of kaolin and solution of gutta- 
p ercha. 
J. G. (Kendal).—When creta preparata is ordered in a prescription, it would not be 
correct to use creta prcecipitata. 
Gray's Supplement to the Pharmacopoeia—A Correspondent (Brighton) points to an 
error in the 3rd edition, 1857, of Gray’s Supplement to the Pharmacopoeia (Redwood)— 
in the formula given for Electuarium Catechu, in which 3 iss of opium is ordered instead 
of 5iss. and observes that as the work is so constantly consulte by the trade, it seemed 
desirable to point out the oversight. 
E. W.—Coating Pills. See vol. iii. (Second Series), page 562. 
M. P. S .— Unguentum Sulphuris Hypochloridi Compositum , vol. x. p. 66. 
An Apprentice (Colchester).— Confectio Rosce Canines. 
S. A (Leeds).— Prepared Cochineal, vol. x. p. 260 ; if desired, Carmine may be 
sustituted for the Cochineal, using, of course, a much smaller quantity of the former. 
II. P. (Stourbridge).—(1) The solution should be filtered. (2) Yes. 
Justitia (Manchester)—(1) None but Pharmaceutical Chemists have the privilege 
of using the arms of the Pharmaceutical Society. (2) Any one who writes over his 
shop-window the words “ Pharmaceutical Chemist,” unless he is on the Register of the 
Pharmaceutical Society, is liable to be proceeded against under the Pharmacy Act. 
Mr. Charles Ekin (Bath), Mr. T. W. Wing (Melton Mowbray), are thanked for their 
communications. 
J. B. G .—A paper on the subject will be published in the next number of the Journal. 
E. L. (Hexham), will find the information he wants in vol. viii., pages 467 and 512, of 
this Journal. 
II. C. (Ipswich).-—The solution will be best effected with recently precipitated oxide 
of iron. 
ERRATA. 
Page 229, line 9 from the top, for “as true with as without them ” read “ as true with¬ 
out as with them.” 
Page 230, lines 18, 19, and 20 respectively', for “himself” and “he” and “him ” read 
“themselves,” “ they ” and “them.” 
Instructions from Members and Associates respecting the transmission of the 
Journal before the 25th of the month, to Elias Bremridge, Secretary, 17, 
Bloomsbury Square, W.C. 
Advertisements (not later than the 23rd) to Mr. Churchill, New Burling¬ 
ton Street. Other communications to the Editors, 17, Bloomsbury Square. 
