526 



INDEX TO VOLUME LXVII 



[JUNE 



Padina, alternation of generations in 278 

 Paine, S. G., work of 278, 279 

 Paraffin sections, fixative for 373 

 Park, J. B., work of 514 

 Parker, J. H., work of 181, 273 

 Parr, Rosalie, work of 272 

 Payson, E. B., work of 184 

 Pediastrum, inheritance in 513 

 Pember, F. R., work of 519 

 Pentstemon, embryo sac and embryo 427 

 Permeability 279 

 Persea pubescens 229 

 Pestalozzia lucumae 508 

 Pethybridge, G. H., work of 97 

 Petry, L. €., work of 184 

 Phaeosphaerella paspali 508 

 Phegopteris, regeneration in 183 

 Phloem, histology of 276 

 Photosynthesis 182 



Phototropism 272; and geotropism 184 

 Phyllachora graminis 507; ischmaemi 



507; quadraspora 507 

 Phytopathology, history of 173 

 Phytopathological journal, a new 103 

 Phytophthora, sex organs of 97 

 Picea glauca 208; glauca albertiana 208 

 Piemeisel, F. J., work of 181, 273 

 Platanus occidentalis 229; occidentalis 

 attenuata 229; occidentalis glabrata 

 230 

 Pods, correlations in position of seeds 243 

 Poisons, organic plant 182 

 Pontederia, trimorphism of 271 

 Populus arizonica 210; arizonica Jonesii 

 211; Fremontii 213; Fremontii pubes- 

 cens 213; Fremontii Thornberii 213; 

 Fremontii Toumeyi 214; Macdougalii 

 212; Palmeri2ii; Parryi 214; texana 

 211; tremuloides vancouveriana 208 

 Porto Rican fungi 501 

 Prairies, minimum moisture content of 

 subsoil related to hygroscopic coeffi- 

 cient 185 

 Pritzel, E., work of 280 

 Protomarattia 84, 88; tonkinensis 88 

 Pteris sulcata, apospory in 469 



R 



Rankin, H. W., "Manual of tree 



diseases" 369 

 Reed, G. M., work of 180 

 Rehfous, L., work of 274 

 Respiration, after death 347; and age 



177; effect of anesthetics on 377; of 



stored wheat 180; vitamines and 



catalase 179 



Reviews: Bews' "Grasses and grasslands 

 of South Africa" 370; Boerker's "Our 

 national forests" 370; Chamberlain's 

 "The living cycads" 511; Emerson's 

 "Our trees, how to know them" 174; 

 Felt's "American gall insects" 268; 

 Rankin's "Manual of tree diseases" 

 369; Russell's "Soil conditions and 

 plant growth" 171; Seward's "Fossil 

 plants" 93; Smith's "British lichens" 

 268; Weed's "Our trees, how to know 

 them" 174; Whetzel's "History of 

 phytopathology" 173 



Rhodosporeae, relations within the 266 



Richards, H. M. 405 



Richards, P. E., work of 176 



Rims of Sanio 449 



Robbins, W. J., work of 276 



Robinson, B. L., work of 280 



Roots, orientation of 376 



Rose, D. H. 105 



Rose, R. C. 281 



Rubus, after-ripening and germination 

 281 



Russell, E. J., "Soil conditions and plant 

 growth" 171 



Rusts of Costa Rica 184 



Rydberg, P. A., work of 269 



Salix, anamesa 62; arctica 56; arctophila 

 57; argophylla 325; cascadensis 55; 

 chamissonis 63; chlorolepis 60; cordi- 

 folia 62; Dodgeana 54; exigua 328; 

 exigua luteosericea 334; exigua neva- 

 densis 331; exigua tenerrima 335; 

 fluviatilis 322; glacialis 63; glauca 

 acutifolia 60; herbacea 52; hudson- 

 ensis 57; leiolepis 46; longifolia 340; 

 longifolia Wheeleri 342; melanopsis 

 337; melanopsis Bolanderiana 338; 

 niphoclada 59; nivalis 47; nivalis 

 saximontana 47; obcordata 64; Par- 

 ishiana 323; Peasei 51; phlebophyUa 

 53; polaris 49; reticulata 44; rotundi- 

 folia 53; sessilifolia 316; stolonifera 

 57; taxifolia 316; Uva-ursi 50; 

 venusta 64; vestita 45 



Sambucus, after-ripening and germina- 

 tion 281 



Sand dune, coniferous 417 



Sap concentration in epiphytes 374 



Sargent, C. S. 208 



Saunders, L. M., work of 279 



Schmitz, H., work of 102 



Schneider, C. 27, 309 



Seedling, anatomy 280; of dicotyledons 

 103; of Dioon spinulosum 251 



