496 
NOTICES TO CORRESPONDENTS. 
“ A Correspondent ” wishes information as to the best method of stuffing frogs, and 
how to kill them without injuring their skins. 
“ Micrography ” (Manchester).—Apply at Smith and Beck’s, Cornhill, for a price list. 
The Student’s Microscope, manufactured by them, would suit your purpose. ‘ The Mi¬ 
croscope,’ by Jabez Hogg, price 7s. 6d. 
“ Qucesitor .”—Copper wire is used in the process for spirit of nitrous ether, because it 
induces the decomposition of the nitric acid and formation of nitrous ether. 
“ Iota ."—We presume, if ammonia is evolved when carbonate of potash is added to 
subnitrate of bismuth, that some ammonia must have been used, although improperly, 
to promote the precipitation of the bismuth. 
“ Southwark .”—We think the label in its present form would not be safe. 
A. S. T .—There is no difficulty in forming camphor into pills by means of conserve 
and a few drops of spirit. 
“ Spes Ultima.” —Morton’s ‘Manual of Veterinary Pharmacy.’ 
U A Registered Apprentice” (Sandgate).—There must have been some error in the 
process of making the permanent ink referred to. 
“ An Examined Member .”—Put the iodide of mercury and the iodide of potassium 
into the bottle with a few drops of water, and, when dissolved, add the other ingredients. 
It will be found that the iodide of mercury, in the proportion stated, is not entirely dis¬ 
solved. 
“ Subscriber .”—Tincture of Virginian prune, Vol. v. (n. s.), p. 105. 
Pharmaceutical Latin Grammar , published by Groombridge aud Sons, Paternoster 
Row, will be out in the course of a month. 
“ R. S.” wishes for “a formula for a Pomade that will darken the hair without stain¬ 
ing the skin.” 
./, F. (Aberdeen), in reply to a correspondent last month, states that the best preser¬ 
vative of Liquorice Root is damp “sawdust.” 
A. E. H. (Derby).—See any work on chemistry. 
“ M.P.S. by Examination .”—Water should be added, if necessary, to make up the 
required quantity. 
F. G. (Devizes) (1) wishes to know the composition of “a powder sold for lighting 
cigars, which took fire when blown upon.” (2.) We know of no such work. 
D. J. E. (Ryde ).—Syrupus Ferri Hypophosphitis. Vol. vii. (2nd series), p. 440. Also 
p. 461 of the present number. 
“ Sy/>hax ” (SoutUport) wishes to know the formula for “ Dr. Coffin’s Composition 
Powder.” 
“ Statim ” (Brixton) and “ Omicron ” (Stourbridge ).”—Linimentum Potassii lodidi 
cum Sapone. Put the Glycerine, Iodide, and 3 oz. water into a clean 20 oz. wide mouth 
bottle; then dissolve the soap (finely shaved) in the 7 drachms of water in a jar by 
means of a water-bath ; strain the solution through muslin into the bottle containing 
the iodide, etc.; allow to stand for two or three minutes, until the bottom of the soap 
solutiou is a little opaque, then mix by agitation ; lastly add the Ess. Limonis, shak¬ 
ing briskly, and, after agitating at intervals for two hours or more, a liniment in the 
form of a soft jelly will result. 
“ St. Mary .”—A powder sometimes called by this name is made as follows :—Opiate 
Confection, prepared with sugar instead of syrup, 1 oz.; Aromatic Confection, 1 oz.; 
Precipitated Chalk, ^ oz.; Powdered Gum Arabic, | oz.; Carbonate of Ammonia, ^ oz.; 
Oil of Peppermint, 60 drops. 
“ An Associate ’’^(Chichester) should apply by letter to the Secretary, 17, Bloomsbury 
Square. 
Communications from Mr. W. M. Thompson , Mr. C. W. Reed, “ 615,” aud Mr. J. 
Hutchinson are acknowledged with thanks. 
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 Messrs. Churchill, New Bur¬ 
lington Street. Other communications to the Editors, Bloomsbury Square. 
