INDEX. 329 
Nitrogen, preparation of pure , 80 
Nutrition of plants, 192 
Nutritive power of the soil, 40 
Observations on asparagine, . 65 
" monardin, ..... .86 
" creosote, 154 
' myrrh, 171 
Officinal sulphur prcecipitatum, . . . . . 120 
Oil of turpentine, on a molecular modification of . . . . 224 
Ointment, preparation of mercurial ...... 80 
Opium, adulterated ......... 94 
" new variety of ........ 94 
" specimen of ........ 164 
Organic acids of Iactuca virosa and sativa, ..... 34 
Oxygen new method of preparing . 74 
Papaver somniferum, report on . . . . . . 126 
Paper, epispastic ......... 279 
Patent granted to Robert Oxland for improvements in the manufac- 
ture of chlorine, . . . . . . . . 313 
Phosphate of soda, 145 
Phosphoric acid, preparation of . . . . . . 178 
Plants, nutrition of . . 192 
Poisoning, detection of prussic acid in cases of ... 77 
" by arsenic, 238 
Potassa and soda, preparation of pure caustic .... 77 
" preparation of pure carbonate of .... 80 
Potassium, explosion produced by the combustion of 221 
Preparation of phosphate of soda, . ... 145 
Proceedings of the New York College of Pharmacy, . . . 148 
Preparations of senega, ........ 247 
Preserving colchicum cormi, ....... 52 
Protocarbonate of iron, ........ 76 
Prussic acid, detection of, in cases of poisoning, .... 77 
Purification of naptha, ........ 78 
" linseed oil, 78 
" nitric acid, 156 
Purgative, castor oil seeds as a ...... 77 
Purple foxglove, 97 
Pyrophorus from alum, ........ 77 
Quinic acid, moans of detecting . . . . . ,156 
