INDEX 321 Feeds, carbohydrates in, 142, 155, 158, 163, 165, 167 composition of, 142, 143 crude fat in, 142, 146, 147 fiber in, 142, 147,148, 156 protein in, 142, 149 ether extract of, 142, 146 galactans in, 168 grinder for, 144 heat of combustion of, 108 mineral analysis of, 145 moisture in, 142, 143, 144 nitrogen-free extract in, 142, 156, 164 non-protein nitrogen in, 155 pentosans in, 142, 165, 166, 167 pentoses in, 165, 167 protein nitrogen in, 155 reducing sugars in, 157, 158, 159 sampling of, 142 sucrose in, 158, 163 xylan in, 165, 166, 167 Fehling's solution, 158, 159, 162, 165 Ferrous ammonium sulphate, pri- mary standard, 68, 74 Fertilizers, 270 availability of nitrogen in, 285,286 ammonia nitrogen in, 283, 285 citrate-insoluble phosphorus in, 279, 281 compatibility of, 271, 272 culture methods for availability, 291 mechanical analysis of, 273 moisture in, 274 nitrogen in, 271, 282, 283, 284 phosphorus in, 271, 274, 275, 276, 277 potassium in, 271, 287 sampling of, 273, 274 water-soluble phosphorus in, 278, 279 Filter paper, 25 Filters, inorganic, 26 light, 129 Filtration, 25 21 Fish oil, bromide test for, 194 Flocculation of clay, 268 Fluxes, 23, 253 Foods, heat of combustion of, 108 Formal titration of proteins, 209 Formaldehyde in milk, 215 French sugar scale, 131 Fryer and Weston on oils, etc., 196 Fuels, heat of combustion of, 108 Fungicides, 292 Funnel, hot water, 226 Furfural, 165 Fusibility, 23 Fusion, 22, 253 G Galactans in feeds, 168 Gases, poison, 309 General operations, 17 German sugar scale, 129 Gillespie on PH determination, 140 Glucose, commercial, 136, 137- specific rotation of, 136 Glycine, 209 Glycylglycine, 209 Glymol in fat determinations, 220 Gooch crucibles, 26, 50 Gravimetric analysis, 1 factors, 2 Grazing incidence of light, 115 Grinder for feeds, 444 Guano, 272 Gum Arabic, 165 Gunning method for nitrogen, 154, 209, 210, 222, 283 H Haag (See Reedy). Half-shadow in polarimetry, 126 Halogen absorption of oils, etc., 170, 196, 197, 226 Halphen tost for cotton seed oil, 192 Hardened oils, 194 Hart's method for casein, 210, 21 1 Heat of combustion, 103, 108 Heated milk, 216