jV. INDEX. 
Edwards, J. B.. F. C. S., M. P. S., fy. On the preparation of 
collodion ; ------ 233 
li u 11 u On coating glass vessels 
with copper, ----- 264 
Fownes, George, F. R. S. On the manufacture of sugar in Bar- 
badoes, ------ 53 
Fremy, E. On the ripening of fruits, and the gelatinous princi- 
ples of vegetables, - - - 151 
Gaultier de Claubry. Cultivation of opium in Armenia, - 13 
" and Cap. Pharmacy in Spain, _ - - 272 
Gay Lussac, M. On aqua regia, - - - - 37 
Gerding, M. On a new and peculiar substance found in Enanthe 
fistulosa, ------ 68 
Grant, James. Adulteration of cream of tartar, - - - 182 
Guibourt, M. Means of determining the purity of otto of roses, 318 
Hallows, W. A. On linimentum saponis, - - - - 178 
Horsford, E. N. Action of water on leaden service pipes, - 342 
Harant, T. Comparative examination of the different methods 
of preparing iodide of potassium, - - 228 
Jackson , W. F. On the toxical and other properties of a substance 
analogous to gun cotton, - - 244 
La Grange, Mauviel. Method of detecting flour of Indian in that 
of wheat, 183 
Laroque, M. On the volatility of fixed salts in the vapor of water, 
and on some of the purposes to which this 
property may be applied, , - - 256 
Lebourdais, M. On some of the proximate principles of vegeta- 
bles, their nature, and a new method of pre- 
paring them, ----- 87 
Liebig, J. On the influence of time upon the formation of 
chemical bodies, - - - 51 
11 u On the preparation of succinic acid from malate of 
lime, 349 
Lonyet, M. Passage of hydrogen through solid bodies, - - 173 
Lyman, Rev. C. S. Cinnabar mines, of Upper California, - 44 
Mansfield, C. B. On some useful properties of benzole and on a 
practical mode of preparing it, - - 329 
