Index 



273 



potassium chloride, 103, 104, 105 



potassium dichromate, 71 



potassium iodide, 103, 104, 105 



potassium nitrate, 103, 104, 105 



potassium phosphate, acid, 105 



potato tuber cultures, 124 



Pothos celatocaulis, 19 



Prat, 27, 28, 260 



" Precision" still, 70 



preparation of nutrients, 102 et 

 seq. 



Priestley, 48, 217, 250; P. and 

 Swingle, 48, 250; Pearsall and 

 P., 217, 250 



proboscis, insect, 218 



procambial strands, technique 

 of excision, 123 



procambial tissues, 48, 49 



procambium, cultivation of, 49 



procumbent habit, auxin a fac- 

 tor in, 211 



protein-N, measurement of, 156, 

 157 



proteoses as nutrients, 101 



Prunus avium, 251 



Pulmonaria, 20 



"pulvis fulminans, " 66 



Putnam, G. P., and Son, 42 



pyridines, 97 



pyridoxine, 98, 100, 103, 104 



pyrimidine, 97 



Q 



qualitative reactions, 186 et seq. 

 quartz cover glasses, 151 

 quartz still, 70 

 Quercus alba, 55 



K 

 rabbit 's eye, plant callus in, 224, 



racks, for cover glasses, ISO, 152 

 radish roots, 105 

 Bana esculenta, 15, 257 

 Sana palustris, 14 

 Bana sylvatica, 14 

 Razdorskii, 45, 233 

 Rechinger, 19, 20, 235 

 records, 129, 168 et seq. 

 redox-potential, 218 



regeneration, 6, 19, 30 



Reiche, 58, 126, 254 



reimplantation of tumors, 221 



replications, 165 et seq. 



respiration, 189 



re-utilization of nutrient con- 

 stituents, 144 



rhizocaline, 212 



Bhoeo, 28 



Richards, 71, 72, 260 



Riker and Berge, 199, 250 



Ringer, 90, 239 



Ringer's solution, 90 



rings, brass, as culture cham- 

 bers, 81, 149 



Rivers, Haagen, and Mucken- 

 fuss, 184, 259; R. and Ward, 

 184, 259 



Robbins, 27, 32, 33, 34, 36, 50, 

 56, 74, 82, 94, 98, 100, 101, 

 105, 131, 143, 157, 185, 209, 

 220, 231, 240, 243, 250; R. and 

 Bartley, 35, 95, 96, 97, 133, 

 157, 185, 239, 243; R. and 

 Maneval, 32, 95, 144, 157, 

 232, 246; R. and Schmidt, 35, 

 95, 98, 105, 133, 157, 158, 185, 

 232, 243, 244; R. and White, 

 V. B., 27, 35, 95, 133, 203, 232, 

 240; R., Bartley, and White, 

 V. B., 35, 231; R., White, 

 V. B., McClary, and Bartley, 

 93, 237 



Robison; Fell and R., 256, 257 



roller tube cultures, 146, 147 



root caps, 61 



root cultures, 117-121 



root hairs, 62, 63 



root nodules, auxin a factor in 

 formation of, 211 



root pressure, 172, 190, 191, 196, 

 197, 198 



root tips, cultivation of, 31, 50, 

 56 



rooting response, 188 



roots, adventitious, 50, 88, 120 



roots, localization of initiation, 

 211, 212 



Rosene, 190, 217, 246; R. and 

 Lund, 217, 251 



