560 
TO CORRESPONDENTS. 
of ammonia, which may chance to prove too inviting to children’s tastes. The instruc¬ 
tions direct us to crimp or fold the yellow papers backwards and forwards, so that when 
opened out they may Ije supported upright in a zigzag form. One of these slips is then 
placed upright on a plate, and ignited in two or three places along the upper edge, but 
without being allowed to blaze. It will burn slowly down with a red glow, diffusing an 
agreeable perfume, whilst the ash of the paper assumes the most fantastic arborescent 
shapes, together with a green colour, which, to a lively imagination, may be suggestive 
of the growth of ferns or lichens. We had no difficulty in imitating this effect by 
saturating thin cartridge paper, in the first instance, with an alcoholic solution of gum 
benzoin, and, when dry, applying an aqueous solution of the bichromate of ammonia. 
The decomposition of the latter substance by heat in contact with burning paper 
affords an explanation of the phenomena observed .—Chemical News. 
TO CORRESPONDENTS. 
Our readers must excuse the unavoidable delay of the .rournal this month ; the 
late arrival of the reports of the Dinner and other meetings.^ added to the shortness 
of February., have rendered it impossible to complete it at the usual time. 
Several articles that were intended for insertion this month have been unavoid¬ 
ably postponed, iriclnding papers by Dr. Harley and Mr. Brown., and reports oj 
meetings at Glasgow., Bolton, Hanley, etc. 
Persons having seceded from the Sociecy may be restored to their former status on 
payment of arrears of subscription and the registration tee 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. 
T. P. B.—Solution of Tannin in Glycerine. —Tannin, 1 part; Glycerine, 4 parts. 
A Commercial Traveller (Bristol) should communicate the particulars of the case to 
the Secretary, 17, Bloomsbury Square. 
S. D. T. — Depilatory. —Sulphuret of barium (recently prepared) and starch, of each 
equal parts. 
iM. L. Clift (Derby).—(1) No candidate can compete unless he be an Associate, Eegis- 
tered Apprentice, or Student of the Society. (2) The specimens must have been col¬ 
lected by the candidate between the first day of May in the one year and the first day 
of June in the following year. 
A. Registered Apprentice (Brighton).—Fownes’s ‘ Manual of Chemistry ’ and Bentley’s 
‘Manual of Botany.’ 
S. (Kilmarnock) should apply, by letter, to the Secretary of the Veterinary College, 
who will give the information. 
M. P. S.—Pepsine Wine. —Vol. XVIIl. page 197. 
X. Y. Z. (Newcastle).—Apply, by letter, to Mr. K. J. Fowler, 11, Kue d’Enghien, 
Paris, who, no doubt, will give the necessary information. 
“ A” (Stoke-on-Trent).—Lard, when properly prepared, is perfectly white, and 
requires no artificial bleaching. See Vol. I. (2ud Series), page 398. 
.7. H. K. (Leeds).—The ether used in preparing Ext. Ergotce Liqxddum may be re¬ 
covered by distillation. 
J. IF. (Haddington) wishes for a formula for the so-called “Glycerine and Lime 
Cream.” 
Fucus Wine. —J. W. wishes for a formula for Fucus Wine. 
Wanted, the January number of this Journal, 1866. Full price will be given on de¬ 
livery to Elias Bremridge, 17, Bloomsbury Square. 
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. 
