Part 1, P. 80.

Rapport addressé par le Comté des Stations Agronomiques, 1887, p. 34.

Agricultural Science, Vol. 8, pp. 2 and 3, 1894, and Massachusetts Agricultural Station, 12th Annual Report, pp. 285 et seq.

North Carolina Agricultural Experiment Station, Bulletin No. 3.

Bulletin No. 43, Chemical Division, U. S. Department of Agriculture, p. 390.

Compiled for author by Mr. K. P. McElroy.

Volume First, p. 337.

Vid op. cit. 12, p. 391.

INDEX.

A Page. Acid phosphates, definition, 150, 151 Albuminoid nitrogen, separation, 225 Alkalies, determination in ashes, 320, 321 official method for determination in ashes, 322 Alkaline earths in wood ashes, 317 Amid nitrogen, separation, 225, 228 Ammonia, preparation for washing precipitates, 17 Ammoniacal nitrogen, 166 separation, 226 Ammonium citrate, influence of acidity and alkalinity on solvent power, 137, 138 movement on solvent power, 141 quality of sample on solvent power, 136 temperature on solvent power, 134 time on solvent power, 133 preparation, 44 solvent for phosphoric acid, 132 nitrate solution, preparation, 45 Animal débris, treatment, 11 Aqueous vapor, measurement of tension, 180, 181 Arsenic, error, 54 Asboth, method for nitrogen, 212 Ashes, analysis, statement of results, 323, 324 composition, 252 fertilizing value, 254 percentage in various woods, 253 Authorities cited in Part First, 156-160 Fourth, 324 Second, 246, 247 Third, 300, 301

B Barium oxalate, reagent for potash determination, 281 Barometer, method of use, 178, 179 Basic phosphatic slags, technical analysis, 123 slags, Dutch method for analysis, 77 Halle method for analysis, 76 Berzelius, method of estimating fluorin, 35, 36 Blood, dried, 165 Brown, separation of iron and alumina in phosphates, 131

C Calcium carbonates, function in manufacture of superphosphates, 152 fluorids, reactions, 152 Carbon dioxid, determination in ashes, 322 phosphates, 19 estimation, 19 in wood ashes, 315, 319 Carnallit, 260 method for analysis, 274-277 Cave deposits, 312 Chatard, modification of Berzelius method, 35-37 Glaser-Jones process, 30, 31 organic matters in phosphates, 18 Chile saltpeter, 168, 235 adulteration, 234 analysis, 234 application, 240 commercial forms, 233 consumption, 245 Gantter’s method, 236-238 method of difference, 239, 240 French sugar chemists, 236 percentage of nitrogen, 233 quantity applied, 244 zinc-iron method, 234, 235 Chlorin, determination in ashes, 322 Chromium, occurrence in phosphates, 128 Citrate and molybdate methods, comparative accuracy, 69 insoluble phosphoric acid, 41 method, 57-59 applicability, 145, 146 Swedish modification, 66, 67 soluble phosphoric acid, 44 direct precipitation, 147 Dutch method, 68 Coloration of distillate, 187 Combustion furnace, 175 Copper oxid combustion, 170 Cottonseed hulls and meal, composition, 251 Crispo, method of estimating iron and alumina, 29, 30

D Dilute ammonia, preparation, 45 Distillate, coloration, 187 Distillation apparatus, 208 Dudley and Pease, determination of phosphoric acid in the presence of iron, 113

F Factors for calculating potash analysis, 270 phosphoric acid analysis, 17 Ferric phosphate in wood ashes, 317, 318 Ferrous sulfate, analysis, 310, 311 uses, 310 Fertilizers, cost of transportation, 2 definition, 1 drying samples, 12 German methods, 13 official methods, 13 natural, 1 objects of analysis, 1 sampling mixed, 6 French method, 7 method of French sugar chemists, 7 treatment of samples in laboratory, 10 Fertilizing ingredients, trade values, 3 valuation, 2 materials, minerals containing, 5 sampling organic, 8 Fish scrap, 134 Fluorin, estimation in phosphates, 35-38 occurrence in bones, 130

G German experiment stations, methods for determining phosphoric acid, 45, 46 Glaser method for estimating iron and alumina, 24, 25, 27 Gooch distillation method, 19 Green vitriol, analysis, 310, 311 uses, 310 Grinding apparatus for fertilizers, 6 Guanos, 312 analysis, 313 nitrogen content, 166 origin, 167 Gunning method, 216, 217 adapted to nitrates, 220 official, 219 for nitrates, 220 process, reactions, 218 Gypsum, 307 amount used, 307 analysis, 308, 309 use for composting, 307, 308

H Halle method for potash, 270, 271 Hen manure, 312 Hess, method for estimating iron and alumina in phosphates, 25, 26 Holleman, silver method for phosphoric acid, 117 Horn, hoof, and hair, 165 Huston, calcium chlorid method, 282 digestion apparatus, 142, 143 mechanical stirrer, 144, 145 solubility of reverted phosphoric acid, 132, 139

I Immendorff, method for estimating lime, 23 Indicator for nitrogen determination, 204 Iodin, determination in phosphates, 127 Iron, acetate method, 24 determination in ashes, 320 estimation in phosphates, 24-26, 28-31

J Jodlbaur method, Dutch variation, 213, 214 for nitrogen, 212, 213 Halle modification, 214 Johnson and Jenkins, method for nitrogen, 177 citrate method, 59 comparison of citrate and molybdate methods, 69, 70 Jones modification of Glaser method, 28 reductor, 115 Jüptner, tartaric acid solution, 17

K Kainit, 259 methods for analysis, 274-277 Kieserit, 263 methods for analysis 274-277 Kjeldahl method, 192-216 Dutch process, 200 Halle process, 200-204 modifications, 209-216 official for nitric nitrogen, 215 process, 204-207 original process, 193-196 preparation of reagents, 167-199 theory of reactions, 197 Knorr apparatus for carbon dioxid, 19 Kreider, perchlorate process, 296 Krug and McElroy, estimation of iron and alumina in phosphates, 32, 33 Krugit, 262

L Land plaster, 317 Leather waste, 314 Lime, action, 303-305 analysis, 305 application, 303 as a fungicide and insecticide, 305 compounds used as fertilizer, 302 determination, in ashes, 320 of state of combustion, 306, 307 estimation in basic slags, 80, 81 phosphates, 21-23, 35 of caustic, 81 preparation of sample, 306

Mc McElroy, method of analysis for wood ashes, 319-322 separation of iron and alumina from phosphoric acid, 33, 34

M Manganese, determination in ashes, 320 Magnesia, determination in wood ashes, 320 error due to occluded, 54 estimation in phosphates, 35 mixture, preparation, 17, 45 removal in perchlorate process, 298 Magnesium compounds, action in manufacture of superphosphates, 154 nitrate, preparation, 45 pyrophosphate, color, 55, 56 Manure, definition, 1 sampling barnyard, 9 Marioni and Fasselli, modification of Glaser’s method, 31, 32 Mercury pump, 173, 174 Mills for crushing fertilizing minerals, 5 Minerals containing fertilizing materials, 5 Moist combustion process, historical, 192 Moisture, determination in ashes, 219 in monocalcium phosphates, 13, 14 Molybdate and citrate methods, comparative accuracy, 69 method, adopted by Brussels congress, 67 sources of error, 53 Molybdedum precipitate, direct weighing, 150 Molybdic solution, preparation, 17, 45 Morgen, citrate method, 60-65

N Neubauer, investigation of error, 54, 55 Nitric nitrogen, 168 estimation, 227 Krüger’s method, 231 Schlöesing-Wagner method, 228, 229 Schmitt’s modification, 230 Ulsch method, 227 separation, 226 Nitrifiable solution, 243 Nitrogen analysis, calculation of results, 177 table for calculating results, 183 as ammonia, 221, 222 determination by Boussingault, 222, 223 cost per pound, 3, 4 forms of occurrence, 161, 162 kinds in fertilizers, 161 method of volumetric determination in laboratory, 175, 176 methods of analysis, classification, 169 official methods, 170 volumetric method, 171, 172 qualitative determination of form, 162, 163 Nitrogenous fertilizers, source, 163, 169 Norwegian methods, 45, 47 Noyes and Royse, determination of phosphoric acid in the presence of iron, 113, 114

O Official method for phosphoric acid, 16 volumetric method, rarely used, 173 Ogilvie, separation of alumina from phosphoric acid, 31, 32 Organic fertilizing materials, sampling, 8 matters, destruction, 255 by moist combustion, 256 sulfuric acid, 56, 57, 147, 148 in phosphates, 39 ignition with sulfuric acid, 255 in phosphates, 18

P Patrick, distilling flask, 209 Pemberton method, comparison with official, 109 of preparing reagents, 107, 108 volumetric method for phosphoric acid, 106 Perchlorate process, accuracy, 300 applicability, 299 comparison of results, 298 method of Kreider, 296, 297 Perchloric acid, composition, 295 keeping properties, 295 preparation, method of Caspari, 290, 291 Kreider, 292-294 reagent for potash, 286 Phosphates, constituents to be determined, 15 insoluble matter, 20 low cost, 3 moisture in monocalcium, 13, 14 natural manurial value, 4 preparation of solution, 20 soluble matter, 19 Phosphatic fertilizers, availability, 148, 149 slags, adulteration, 81 detection, 82-86 analysis, 75-81 manufacture, 71, 72 solubility, 74 Phosphomolybdic acid, reagent for potash, 289 Phosphoric acid, condition in superphosphates, 101 cost per pound, 3 determination as stannic phosphate, 40 by official method, 16 titration of yellow precipitate, 106-110 in ashes, 321 basic slag, 51 bone meal, 51 fish-guano, 51 mineral phosphates, 51, 53 superphosphates, 50 direct estimation, 15 Dutch method of determination, 51-53 error due to volatility, 54 estimation as a lead compound, 110 in presence of iron, 112 molybdenum technical method, 120, 121 preparation of reagents for technical determination, 118, 119 separation in wood ashes, 319 silver method, 116, 117 sources, 39 Swedish methods of determining, 49, 50 technical determination, 118-125 volumetric uranium method, 121, 122 time required for precipitation, 126 typical solution, 95 used for superphosphate manufacture, 156 volumetric determination, 86-118 Platinic chlorid, method for potash, 267 official, 267, 268 Platinum method, sources of error, 284, 285 waste, recovery, 287-289 weighing metallic precipitate, 283, 284 Polyhalit, 261 Potash analysis, classification of methods, 266 consumption, 265, 266 cost per pound, 4 Dutch method for analysis, 272 estimation as perchlorate, 289-300 table of factors, 287 forms found in fertilizers, 249 Halle method for analysis, 270, 271 in molasses, 254 winery residues, 255 methods of analysis, 266-300 occurrences in mineral deposits, 256, 257 official alternate method, 269 recovered from factory residues, 265 salts, changes in situ, 257 control method for analysis, 283 effect of concentration on accuracy of analysis, 285, 286 geological occurrence, 258 methods for analyzing concentrated, 278-280 solution from organic compounds, 270 sources, 248 Swedish method for analysis, 273 Potassium hydroxid solution, tension of vapor, 182 magnesium carbonate, 265 platinochlorid, differences in crystalline form, 286 sulfate, grades as fertilizers, 264 Pyrophosphate, examination, for impurities, 126

R Reverted phosphates, reversion by ammonium citrate, 103, 104 phosphoric acid, arbitrary determination, 139 definition, 139, 140 determination by uranium method, 102 Robinson, sources of error in platinum method, 284, 285 Roode, de, method for kainit, 281 Ross, direct precipitation of citrate soluble phosphoric acid, 147 Ruffle method, 188 Boyer’s modification, 190, 191 official, 188-190

S Salt, 309 analysis, 310 Samples, directions for taking bulk, 243 French method of preparation, 10 German method of preparation, 10 official method of preparation, 10 special cases, 12 taking, 4 Sanborn, method of filtering phosphoric acid, 42 Sand in wood ashes, 315, 316, 319 Schönit, 264 Schweitzer and Lungwitz, method for potash, 281 Scovell, method for nitrogen, 215 Seeds and seed residues, 163 Shaking apparatus, 78, 79 Silica, error due to occluded, 53 estimation in phosphates, 20 in wood ashes, 315, 316, 319 Slags, basic phosphate, 70 composition, 72, 73 manufacture, 71, 72 Soda-lime process, 183, 184 French method, 186 hydrogen method, 187 official method, 184-186 preparation of samples, 187 Sodium nitrate, functions, 231, 232 value, 246 Soluble phosphoric acid, determination by uranium method, 102 German method of estimating, 47, 48 Spencer, silver method for phosphoric acid, 116 Stall manures, 311 Stannic chlorid, reagent for determining phosphoric acid, 40 Sterilized tubes, for sampling, 241 Stone and Scheuch, estimation of caustic lime, 81 Sulfuric acid, determination in ashes, 321 estimation in phosphates, 35 quantity used in the manufacture of superphosphates, 154, 155 removal in perchlorate process, 298 Superphosphates, action of iron and alumina compounds in manufacture, 153 chemical reactions in manufacture, 151 definition, 150, 151 determination by uranium method, 102 manufacture, 150-156 with phosphoric acid, 156 quantity of sulfuric acid used in manufacture, 154, 155 technical analysis, 124, 125 Sylvin, 262 Sylvinit, 263 methods for analysis, 274-277

T Tankage, 165 Tartaric acid, use, in molybdenum solution, 17 Tetracalcium phosphate, molecular structure, 73 Thiocyanates in fertilizers, determination, 224 Tobacco stems, 250 and waste, composition of ash, 250 waste, 250 Total phosphoric acid, treatment, 42, 43

U Uranium method for phosphoric acid, 88-101 preparation of standard solution, 94 process, causes of errors, 98, 99 correction, 97 titration of sample of phosphate, 100 solution, titration, 96

V Vanadium, methods of estimation, 128, 129 Van Slyke, reactions of gunning method, 218 Voorhees, method for nitrates, 220

W Waste matters as fertilizers, 2 Water, determination in phosphates, 18 soluble phosphoric acid, 41 volumetric estimation, 111 Wells, citrate method, 59 Wilfarth, method for nitrogen, 211 Winton and Voorhees, gunning method for nitrates, 220 potash analysis, 285, 286 Wood ashes, 251, 315 composition, 252 Wyatt, method for determining iron and alumina in phosphates, 34 estimating fluorin, 37, 38 lime, 22