736 
NOTICES TO CORRESPONDENTS. 
BOOKS RECEIVED. 
Chemical Notes for the Lecture Eoom, specially arranged for the London Univer¬ 
sity Matriculation Class. By Dr, Wood, F.C.S. Loudon: W. H. Warr and Co., 
Featherstone Buildings, Holborn. 1867. 
On a New Process for Preparing Meat for Weak Stomachs, By W. Marcet, 
M,D,, F.K.S. London *, John Churchill and Sons, New Burlington Street. 1867. 
TO CORRESPONDENTS. 
Persons having seceded from the Society may be restored to their former status on 
payment of arrears of subscription and the registration fee of the current year. 
Those who were Associates before the 1st of July, 1842, are privileged (as Founders 
of the Society) to become Members without examination. 
Want of space compels us to omit several communications this month on the question 
of the Pharmacy Bill; our correspondents express various opinions, but as the provisions 
of the Bill have been discussed and approved in general meeting, our inability to insert 
these letters will be of the less consequence. 
F. M. (Sheffield),—See page 679 of our last number. 
Pyroxylin. —Mr. Fletcher suggests that in making pyroxylin by the process of the 
Pharmacopoeia, the heat of a water-bath may cause explosion of the cotton, and that a 
lower temperature than that of boiling water should be applied towards the end of the 
drying process. This precaution would be necessary in making the explosive pyroxylin 
used as gun-cotton, but the pyroxylin of the Pharmacopoeia, which is soluble in a mix¬ 
ture of ether and spirit, is much less explosive than gun-cotton, and we have never 
known an instance of its igniting at the heat of a water-bath. 
Ficus Coccus wishes to kuow how to dissolve white shellac in naphtha. Shellac, 
after it has been bleached with chlorine, very soon passes by exposure to air into a con¬ 
dition in which it is insoluble in spirit and also in naphtha. When this change has 
taken place, we know of no means of restoring its solubility. 
J. W. C. wishes to know what the black composition used for filling the letters cut 
in a white marble slab is composed of. 
“ Assistant.” —An assistant in the position described by our correspondent would be 
excluded by the provisions of the proposed Pharmacy Bill. 
M. P. S. (Halifax).—The label in question would render the article liable, either to 
the Wine Licence, or to the Patent Medicine Duty. 
W. W. J. (Brecon) wishes for a formula for “Quinine Hair Wash.” The other ques- 
tionwas answered in our last number, p. 679. 
W.C. (Norwich) wishes (1) for a formula for “Bloom of Eoses for the Complexion.” 
(2) For the mode of making granular effervescing salts, see Vol. I. (2nd Series), page 301» 
“ W. H.” — Walnut Pomade. —Take of extract of walnut leaves, 5iij; lard, 3iv; oil 
of bergamot, 1 drop ; mix. 
Communications are acknowledged from Mr, Mumbray, Mr. Betty, Mr. Fryer, 
Mr. J. Thompson, Mr. Davies, Mr. B. S. Proctor, Mr. Mills, Mr. Deighton, “ A Suburban 
M. P. S.,” and “Medicus.” 
Wanted, the July number of this Journal, 1865. Full price will be given on delivery 
to Elias Bremridge, 17, Bloomsbury Square. 
Errata in May number, 1867.—P. 637, Sirop Daicode, read Sirop Diacode. The 
special mode, read The mode. P. 639, That a Pharmacopoeia, read Thus a Pharmaco¬ 
poeia. P. 640, demaracation, read demarcation. 
Instructions from hlerabers and Associate's respecting the transmission of the 
Journal before the 25th of the month, to Elias Bremridge, Secretary, 17, 
IBoomsbury Square, W.C. 
Advertisements (not later than the 23rd) to Messrs. Churchill, New Bur¬ 
lington Street. Other communications to the Editors, Bloomsbury Square. 
