INDEX. 
331 
Preparation of perchloride of iron, - 142, 167 
of narcotic extracts, - - - h " 250 
of valerianate of zinc, - - - - - 298 
of iodide of potassium, a new method of - - - 301 
Prepared iron, ..-----89 
Purification of gum resins, 297 
Quineiine, - 199 
Quinia, new salt of mercury and ----- 156 
products of the action of nascent oxygen on 198 
Radix sumbul or Persian musk root, - 119 
Report on catechu, ------- 164 
on mercurial preparations, ----- 1 
Researches on narcotine, 136 
Satrapenum, - 230 
Salad oil, adulteration of - - - - - 291 
Salt, adulteration of culinary ... - - - 287 
Salts of iron, double ------ 96 
of peroxide of iron, deoxidation of - 252 
Sumbul, radix, or Persian musk root, - - - 119 
Scammony, virgin - - - ' - - - 313 
Seaweeds, rnannite in - - - - - 237 
Senega and squill, extract of - - - 72,249,309,311 
Senegin, - - - - - - -71 
Senna, fluid extract of - - ' - - - - 310, 31 
Sesquichloride of iron, preparation of - 142,167 
Slaked magnesia, ------- 275 
Snake root, ..-----10 
Soda, adulteration of potassa by ----- 203 
Solanine, ----- -- - 160 
Spanish fly, ------- 81 
Spigelia, extracts of ------ IS 
Squill, extract of senega and - - - 72,249,309,311 
Starch, ammonia in the manufacture of - - - 315 
Stramonium, extract of - - - - 175 
Strychnia, products of the action of oxygen on ... 201 
electricity in poisoning by 154 
Sugar, new method of detecting, in diabetic urine, - - - 234 
adulteration of ----- 289 
Sulphate of lead, action of alkaline salts on - - - - 268 
Sulphates of organic bases and iodide of potassium, - 21 
Sulphopianic acid, 4 - ------ 139 
Sulphur, precipitated - - - - 184 
