1902] 



INDEX TO VOLUME XXXIV 



477 



Wright, E. P. 38S; Wright, H. 320, 



468: Yendo, K. 468; Youse, Lucy 377; 

 Zelemy, C. r6o 



Pertusaria communis, development of 



apothecia 379 

 Phacelia 155, 31 1; corrugata 26 

 l'hace]ophr}nium 149 

 Phloeoterma 458, 461 

 Phieum, Michelii 153; pratense 153 

 Phragmidium 239 

 Phragmites,^t?;;/?;/e^?/2V 16, 18; Phragmites 



16, 18; Uredineae upon i 

 Phoradendron 456 

 Phosphorus compounds, transformation 



m 3 



80 



Phycomycetes, fertilization of 420 

 Phyll actinia, germination experiments, 



382 

 Phylloglossum, prothallium of 74 

 Phytogeography, recent contributions to 



American 383 

 Pierce, G. J., personal 159, 319 

 Pieters, A. J-, work of 3S6 

 Pilea 456 



Pilger, R., work of 76 

 Pinus, Banksiana 251; echinata 466; 



halepensis 309; nigra 309 ; rigida 384 ; 



Strobus 251 ; taeda 385, 466 

 Piper 312; adunca 321; medium 321; 



ovule, seed and fruit of 321 

 Piper, C. v., work of 381 

 Piperaceae, development of 321 

 Pistaciopsis 76 

 Plagiothecium 231 

 Plankton, effect of dissolvedO and CO^ 



235 

 " Plant Breeding,'' new edition of 388 



Plant, distribution 149; formation 316; 



juices, electrical conductivity of 81 ; 



societies 129, 290 

 Plectascineae, key to genera 41 

 Plectrothrix 239 

 PJeiostachya 149 

 Pleomassaria 239 



Pleurococcus miniatus and amides 235 

 Plowman, A. B., work of 241 

 Poa 155 



Podocarpus Makoyi, vivipary in 234 

 Pollard, C. L., personal 157, 159; work of 



382, 386 

 Polyembryony, in Euphorbia dulcis 153; 



in Ginkgo 64 



Polvgontim 155 



Polypodium 381, 458; carnosum 317; 

 sinuosum 317; vulgare, teratological 143 

 Polyporaceae 458 

 Polysiphonia 7 i 

 Polysphondylium 316 

 Polystichum 381,382 

 Polytrichum 231 



Pond, R. H., personal 320 



Populus, zone of 131 

 Porphyra 72 



Portulaca, electrical conductivity of 91 

 Postelsia 468 



Potamogeton, zone of 129 



Potato tuber, experimental morphology 



of 242 

 Potentilla 77, 233 

 Potter, M. C., work of 240 

 Potts, George, work of 459 

 Praeger, L., personal 468 

 Pressure, osmotic and gas 151 

 Preston, C, E., personal 320 

 Pringle, C. G., personal 79, 157 

 Proc, Indiana Acad. Sci. 376 

 Proserpinaca palustris, stimulus causing 



change of form and structure 93 

 Protoplasm, irritability of plant 463 ; 



nature and origin of 378; of Schizo- 



phytes 152 

 Protosteie 216 

 Prowazek, S., work of 466 

 Prunus, hydrocyanic acid in 232 

 Pseudocalea 239 

 PseudomeJasmia 155 

 Pseudomonas destructans 240 

 Pteridophvtes, anatomy of 154; Cuban 



458 



Pterygophora califcrnica 152 



Puccinia 77, 155 ; Arundinariae 18 ; 

 ariindinacea I5;dispersa 457 ; Distich- 

 lidis 13; Fraxinata 6; glumarum 77; 

 graminis 77, 153; peridermiospora t\ 

 Phlei-pratensis 153; Phragmitis 15; 



rubella 15; Seymouriana ii; simil- 



lima 17 ; sparganioides 6 

 Puttemansia 155 

 Pyrenula nitida, development of 379 



Q 



Quercus, Marylandica 387 ; rubra 384; 

 velutina 384 



R 



Ramaley, F., 140; personal 468 



Kane, F. \V., personal 159 



Ranunculus arvensis, variation in floral 



organs 380 

 Raphanus sativus, electrical conductivity 



of 88 

 Raphidium polymorphum and amides 



235 

 V.tQ(l, H. S. 125 ; work of 387 



Regeneration, recent studies upon 464 



Rehder, A., 246 



Rehoboth beach 2S4 



Rendle, A. B,, personal 467 



Rennert, Miss R. J., personal 160 



