CONTENTS. Vil. 
No. IV. 
Observations on Acetate of Zinc. By William Procter, Jr., - 241 
An address delivered to the Graduates of the New York College 
of Pharmacy, Nov. 20th, 1845. By George D. Cogge- 
shall, Esq., Vice President of the College, - - - - 244 
Remarks on the preparation of Seneka. By William Procter, Jr., - 247 
Process for preparing Valerianic Acid. By Messrs. T. and H. 
Smith, 252 
On the transformation of Perchloride of Mercury into Protochlo- 
ride, by certain Pharmaceutical preparations. Compound 
preparations of Mercury not incompatible with these pre- 
parations. By M. Lepage, 255 
On Aqua Regia; on Hyponitric Acid, as a means of oxidation; 
on the Constitution of the same acid, and the part it acts on 
being put in contact with organic substances. By Dr. 
Koene, Professor of Chemistry at Brussels, 257 
On the power of dissolving Oxygen, possessed by Litharge in a 
state of fusion, and on several peculiarities which accompa- 
ny the production of Litharge by Cupellation on a large 
scale. By M. F. Leblanc, 270 
Manna. By A. Leuchtweiss, 276 
Anew caustic formed by the mixture of Safron with sulphuric 
acid. By M. Velpeau, - 277 
Mode of preparing epispastic paper. By Wislin, - - - 279 
Contributions towards the Chemical History of the Gratiola. By 
M. Eugene Marchand, of Fecamp, - 281 
On a remarkable change which morphine undergoes by the action 
of sulphuric acid. By A. E. Arppe, - 286 
Observations on the theory of M. Peligot and M. Baudrimont re- 
specting the manufacture of Sulphuric acid. By Dr. Koene - 289 
Observations on Hyposulphite of Soda, or Sulphite-sulphuret of 
Soda. ByE. Mouchon, 292 
A new process in Eudiometry for calculating the volume of the 
elements of Atmospheric Air in relation to each other. By 
M. Lassaigne, --------- 294 
On the action of Alkaline Bicarbonate of vegetable bases in the 
presence of Tartaric acid. By C. Oppermann, - - - 297 
Chemical remarks on Cascarilla. By A. Duval, - 300 
Note upon the preparation of Iron reduced by Hydrogen. By 
MM. E. Soubeiranand Dublanc, 303 
Minutes of the Pharmaceu tical Meetings, 306 
Miscellany, 313 
