VUl 
CONTENTS, 
No. IV. 
On the Hydrargyro-biniodides of Potassium, the yellow iodide of 
Mercury, and a Compound of Biniodide of Mercury and 
Ammonia. By Ambrose Smith, - 265 
On the Tartrate of Iron and Ammonia. By William Procter, Jr., 275 
Memoir upon the Detection of Arsenic forming a Toxicological 
Compendium, as far as regards this Substance. By Au- 
gustine Duhamel, - - - - - 279 
Introductory Lecture to the course of Materia Medica in the Uni- 
versity of Pennsylvania. By Geo. B. Wood, M, D., - 298 
Solution of Iodide of Iron. By William Procter, Jr., - 323 
Some observations on the Aqueous Solution of Carbonate of Mag- 
nesia, with excess of Carbonic Acid, and on the Salt which 
it affords by Spontaneous Decomposition. By John Davy, 
M. D.,F. R. S., - - - - - 324 
Notice of Chelidonine and Perropine, - 328 
On Granatine. By M. Landerer, - 331 
Upon a Pale Cinchona of bad quality found in Commerce, . - 332 
Note upon a Substance of Foreign Origin resembling Myrrh, and 
the peculiar Principle contained in it. By M. Planche, - 333 
Note upon the Medical Natural History of a Concrete Juice com- 
ing from Brazil, under the name of Guarana, - - 340 
Organization of Medicine and Pharmacy in Russia, - - 343 
Miscellany, - 347 
