326

INDEX

Ma } ,'Jh!'!
*V! i

Potassium, chlorplatinatc method
for, 244, 245, 288

chromato, indicator, 223

dichromate, light filter, 129
standard solution of, 178

hydroxide, standard solution of,
277

in fertilizers, 271, 287

in insoluble minerals, 243

in soils, 243

iodide, reagent, 178

perchlorate method for, 247, 289

permanganate for nitrogen availa-
bility, 286

standard solution of, 65, 67, 68,
72

sulphate in nitrogen determi-
nation, 154

thiocyanate for soil acidity, 265
Potential plant food in soils, 233
Potentiometer method for Pjy, 138
Powdered milk, 219
Precipitate, correction for volume of,

133
Precipitates, drying of, 26

ignition of, 28

Hisso. of crystals, 25
Freeip itatio n, 24
Preparation of samples, 17

of insecticides, 293
Preservatives in milk, 215
Prideaux on indicators, 16
Primary standards, 9
Prism, Amici, 116, 117

Nicol, 125

Protein nitrogen in feeds, 155
Proteins, formal titration of, 209

in cheese, 227

in evaporated milk, 217, 218

in milk, 199, 209, 210, 213
Ptyalin, 163
Pulfrich refractometer, 119, 174

Q

Quantitative determinations, 48
Quartering samples, 19, 20, 21

Quartz, optical activity of, 127
wedge compensation in polari-
metry, 127
Quinine sulphate, specific rotation
of, 123
R
Radiation corrections in calorimctry,
106, 111
Raffinose, 133, 136
Reducing sugars in feeds, 157, 158,
159
Reduction of iron, 71, 74
Reedy and Haag on soluble arsenic,
303
Refraction, angle of, 113
index of, 113, 120, 174, 226
Refractometer, Abbe", 114, 115, 174,
175
butyro-, 118, 174
dipping, 118, 119, 174
Pulfrich, 119, 174
Refractometry, 113
light for, 115
Regnault-Pfaundler radiation cor-
rection, 107
Reichert-Meissl number for butter,
197, 225, 226
for oils, etc., 183, 186, 188, 196,
197, 225, 226
Resin oil, optical activity of, 192
Reversion of phosphates, 275
Rhead and Ridgell on organic matter
in soil, 248
Rhotaniuni, 32
Richards on calorimetry, 41
Ricinoleic acid, 177
Ricinolein, 190
Rider, chain, 37
weight, 36
Ridgell iSee Rhead).
Riffle, 21
Ripening products of cheese, 227
Rock phosphate, phosphorus in, 89,
91, 279
Rohrig tube, 205, 218, 221