302 



INDEX. 



ferric chloride, sodic acetate, 

 magnesia mixture, and citric 

 acid, 159— by metallic tin, 155— 

 in presence of large excess of 

 ferric oxide, IGO— when it alone 

 is to be estimated, 159 — estima- 

 tion as magnesic pyrophosphate 

 84 — by volumetric process, 

 86— ia bone-black, 230— in bone- 

 meal, 22S— in commercial ma- 

 nures, 224— in coprolites, 231— 

 in guano, 232— in marl, 207— in 

 phosphorite, 231— in superphos- 

 phate, insoluble, 236— soluble, 



235— in urine . .222 



Phosphoric acid, reactions of. 83 



Phosphorite, complete analysis of, 



231— phosphoric acid in 231 



Phosphorus salt, as reagent 18 



Piknometcr 23 



Plant ash, see ash of plants 



Plant, chlorine in, 245, 246— sulphur- 

 ic acid (ready formed), 245 — to- 

 tal sulphur 245, 246 



Platinum crucibles, care of. 40 



Platinic chloride, as reagent 18 



Plumbic acetate, as reagent, binox- 



ide, oxide 18 



Potash compounds, commercial 239 



Potassic acetate as reagent, 18— bi- 

 sulphate, chromate, chlorate, 

 dichromate, fcrricyanidc, ferro- 

 cyanide, hydrate, iodide, per- 

 manganate, 19— and sodic car- 

 bonate, and eodic tartrate, 



sulphocyanate 20 



Potassium, elimination from mix- 

 ture of metals by milk of lime, 

 157 — by oxalic acid, 158 — by 

 platinic chloride, 159— from sili- 

 cates, 76 — estimation as chlor- 

 ide, 45 — as potassic platinic 

 chloride, 46— sulphate, 46— by 

 titration with standard acid, 47 

 —in ashes of fuel, 249— in Chili 

 saltpetre, 239 — in commercial 



manures, 235— in water 272 



Potassium, reactions, 44— separa- 

 tion from sodium by indirect 

 determination as chloride, 53— 

 as sulphate, 53 — by platinic 

 chloride .. 52 



Potassium and sodium, conversion 

 of mixed sulphates into chlor- 

 ides 53 



Potatoes, dry substance in, soluble 

 in water, protein compounds in, 



261— starch, 262— water 261 



Precipitation 29 



Precipitates, ignition of, Avith filter, 

 38— after separation from filter, 

 38— transferring of to filter, 30— 

 washing of, 32— weighing of . . . . 38 

 Protein compounds, estimation of, 

 118— in fodder, 252— in milk, 263 

 — in potatoes, 261— in seeds, 262 



— in wine, 278 — reactions of 117 



Qualitative analysis, course of 130 



Quantitative analysis, schemes of. . . Ji61 



Quartz powdered, as reagent 29 



Residues, ignition and weighing of, 38 

 Results of analyses, calculation of. . 43 

 Rocks, and products of their weath- 

 ering 205 



Saccharose, estimation, 116— reac- 

 tions 115 



Saccharometer 24 



Salt, complete analysis of, 238— esti- 

 mation of in butter and cheese.. 268 

 Saltpetre, Chili, see Chili saltpetre. 

 Sand in ash of plants, 243— in soils, 



182— separation of from silica.. 75 

 Schlossing's process for estimating 



ammonia, 56— nitric acid 89 



Seeds, ash, etc., dry substance solu- 

 ble in water, in starch, water.. .262 



Silica and sand in ashes 243 



Silicates, fusion of with sodic and 

 potassic carbonate, 76— solution 

 of, 74 -treatment of with amnio- 

 nic fluoride, 77— with hydroflu- 

 oric acid 77 



Silicic acid, estimations and reac- 

 tions, 74— separation of from 



coal and from sand 75 



Silt analysis of marl, 205— of soils, 

 Dietricli's method, 172— NObel's 



method 169 



Silver refuse, to work over 13 



Skin, powder of. as reagent 118 



Soda-lime as reagent 20 



Soda, standard solution of 50 



Sodic acetate as reagent, 20— sodic 

 and amnionic phosphate, 20— bi- 



