1048 
THE PHARMACEUTICAL JOURNAL AND TRANSACTIONS. 
[June 29, 1872. 
Antiseptics and Disinfectants. 
Collodion with Carbolic Acid. 
R Carbolic Acid. 5 j 
Ether.fl. § vj 
Stronger Alcohol.fl. 5 ij 
GunCotton. 5 jgrs. iv. 
Dissolve the gun cotton in the ether and alcohol 
mixed, and then add the carbolic acid. 
Collodion with Sulphocarbolate of Zinc. 
Jk Sulphocarbolate of Zinc ... 5 j 
Ether. fl.*vj 
Stronger Alcohol.fl. 3 ij 
Gun Cotton.. . 3 ] grs. iv. 
Introduce the cotton into a suitable bottle, add 1 
fluid ounce alcohol, shake well; add the ether, and 
agitate frequently until dissolved. Dissolve the zinc 
salt in the balance of the alcohol, and mix with the 
prepared collodion. 
Collodion with Thymol. 
R Thymol.5j 
Ether.fl. 5 vi 
Stronger Alcohol.fl. 3 ij 
GunCotton. 3 j grs.iv. 
Dissolve the cotton in a mixture of ether with 
part of the alcohol, dissolve the thymol in the 
balance of the alcohol, and mix. 
Stimulants in Cutaneous Diseases. 
Collodion with Iodide of Mercury. 
Mercuric Iodide. 5 j 
Potassium Iodide. 5 ss 
Alcohol.fl. 5 iv 
Ether.fl. 3 iv 
GunCotton. 33 grs. iv. 
Triturate the iodides together ii; a mortar, add the 
alcohol boiling, and rub until they are completely 
dissolved. Then add the gun cotton, lastly the 
ether, and agitate frequently until the cotton is all 
dissolved. 
Stimulants and Rubefacients. 
Collodion with Arnica. 
P> Powdered Arnica.^ iv 
Ether.fl. 5 xij 
Stronger Alcohol.q. s. 
GunCotton. 5 ij grs. viij. 
Mix the ether with 4 fluid ounces alcohol. Moisten 
the arnica with sufficient of this, pack in a percolator 
and pour on the balance, following with alcohol until 
16 fluid ounces of tincture have been recovered; to 
this add the cotton, and agitate frequently until 
dissolved. 
Collodion with Capsicum. 
Jk Ground Capsicum.* iv 
Ether.fl. 3 xij 
Stronger Alcohol.q. s. 
Gun Cotton. 100 grs. 
Proceed as in collodion with arnica, recovering 16 
fluid ounces of tincture, in which dissolve the gun 
cotton. 
Collodion with Mezereon. 
P> Ground Mezereon ..... 5 iv 
Ether.fl.^xij 
Alcohol.q. s. 
Gun Cotton.128 grs. 
Mix the ether with 4 fluid ounces of strong alco¬ 
hol, and in this allow the mezereon to macerate one 
week. Drain, pack tightly in a conical percolator, 
pour on the separated liquid, and follow with enough 
alcohol to recover 16 fluid ounces of tincture, in 
which dissolve the cotton. 
Collodion with Savin. 
Powdered Savin Leaves ... 3 iv 
Ether.fl-Sxij 
Alcohol.q. s. 
Gun Cotton.grs. 128. 
Proceed in same manner as collodion with capsi¬ 
cum. 
Collodion with Black Pepper. 
R. Ground Black Pepper . . . 3 iv 
Ether.fl 5 xij 
Alcohol ....... q. s 
Gun Cotton.128 grs 
Proeeed in the same manner as iii collodion with 
capsicum. 
Vesicants. 
Collodion with Cantharides. 
R. Powdered Cantharides . . . 3 iv 
Ether.fl % xij 
Stronger Alcohol . . . . q. s 
Gun Cotton.80 grs 
Moisten the cantharides with a small portion of 
the ether, and pack in a conical percolator. Then 
pour on the balance of the ether, mixed with 4 fluid- 
ounces alcohol, and follow with enough alcohol to 
recover 16 fluid ounces, in which dissolve the gun 
cotton. 
These collodions can be used as substitutes for 
many of the officinal plasters, having the advantage 
of occupying a small bulk, ready adaptability to any 
surface, and powerful therapeutic action. 
I have endeavoured, as far as possible, to give 
some practical information on a branch of pharmacy 
of which comparatively little is known. The sub¬ 
ject is, I think, an important one, since gun cotton 
and collodion occupy a high position in both medicine 
and the useful arts, and to its elaboration and useful 
application too much study cannot be devoted.— 
Amer. Journ. Pharmacy. 
ftjjaptcra fat Siuknts. 
CHEMICAL NOTES TO THE PHARMACOPOEIA. 
BY WILLIAM A. TILDEN, D.SC. LOND. 
DEMONSTRATOR OF PRACTICAL CHEMISTRY TO THE 
PHARMACEUTICAL SOCIETY. 
Zinci Yalerianas. —Zn(C 5 H 9 0 2 ) 2 . Sulphate of 
zinc and valerianate of soda are dissolved separately 
in hot water, the solutions mixed, and the crystals, 
which are deposited almost immediately, removed by 
straining. A few more are obtained by evaporating 
the liquid. The whole of the crystalline deposit is 
then washed and dried without heat. 
2NaC 5 H 9 0 2 -f ZnS0 4 = 
Zn(C 5 H 9 0 2 ) 2 -f- Na 2 S0 4 
[§ In brilliant white pearly tabular crystals with 
a feeble odour of valerianic acid and a metallic taste; 
scarcely soluble in cold water or in ether, soluble 
in hot water and alcohol. Its solution in hot water 
is not precipitated by chloride of barium. It gives 
when heated with diluted sulphuric acid a distillate 
which, when mixed with solution of acetate of copper, 
does not immediately affect the transparency of the 
fluid, but forms after a little time oily drops, which 
gradually pass into a bluish-white crystalline de- 
