288 



INDEX 



Poulard wheat, 165 

 Prickly comfrey, 231 

 Prickly lettuce. 252 



Prickly pear, 212 



Primrose, Chinese, and skin eruptions, 

 95; evening, 248 



Prince's feather, 244 



Pringle, Cyrus G., aunt of, mentioned, 244 



Privet, as a poisonous plant, 96 



Proso, 236 



Prosopis juliflora, 184 



Protandry, that state of the flower in 

 which the anthers shed their pollen 

 before the stigma is ready to receive 

 it. 



Protopin, 65 



Protoveratridin, 51 



Protoveratrin, 51 



Provence cane, 129 



Prunus amygdalus, 232; armeniaca, 232; 

 avium, 232; cerasus, 232; persica, 

 232; serotina as a poisonous plant, 

 67; species of, as poisonous plants, 67 



Prussic acid, poisoning by, 45 



Pseudomonas radicic'ola, 181; activity of. 

 220 



Psychotria bacteriophila, 222 



Pterocarpus, 184 



Ptomaines, 18 



Pubescent, hairy with fine, soft down, or 

 hairs. 



Puccinia suaveolens, as a rust of Canada 

 thistle, 256 



Pueblo corn, 159 



Pueraria thunbergiana, 212 



Pulvinus, the swelling at the base of the 

 leaves and leaflets of leguminous 

 plants by which motion is accom- 

 plished. 



Pumpkin, 232 



Pumpkin, ash, 232 



Purgation, the evacuation of material 

 from the bowels as a result of the use 

 of purgatives. 



Purgatives, 12 



Purging cassia, 185 



Purity tests, apparatus for, 260 



Purple vetch, 187 



Purslane, 247, 252 ' 



Pustulation, a condition in which pustules, 



or blister-like vesicles are formed. 

 Pyrus communis, 231 

 Pyrus malus, 231 



Quack grass, 254 

 Quince, 232 

 Quinoa, 237 



Rachilla of grasses, 125 



Radicula armoracia, 225 



Radish, 225 



Rag doll seed tester, 271 



Ragweed, 243, 252 



Ragweeds and hay-fever, 112 



Ragwort as a poisonous plant, 109 



Rain-guard of grass leaves, 125 



Ramie, 228 



Raphanus sativus, 225 



Ranunculus acris, 59 ; bulbosus as the cause 

 of skin eruptions, 59; Ficaria, 59 



Raspberry, 233. 



Rations, 118 



Ratios, nutritive, 119, 120 



Rattle-box as a poisonous plant, 79 



Rattleweed, 75 



Ravenel, Dr. M. P., mentioned, 2 



Ray-flowers, the flowers of a head which 

 are marginal, or strap-shaped. 



Red cedar, 43 



Red clover, 191; cutting, 192; description 

 of, 191-192; harvesting, 192; nutrient 

 value, 193; pollination of, 192; treat- 

 ment, 192; varieties, 193; yield of, 

 192 



Red root as a poisonous plant, 52 



Red-top, 129, 136; seed impurities of, 263; 

 sowing of, 137; yield of, 137 



Redwood, 43 



Reed, 129 



Reeder, Dr. W. C., mentioned, 58 



Reflex, the return of a nervous impulse, or 

 a body. 



