288 



Plant-Case for the Control of Relative 

 Humidity, A, 77 



Plant Industry, Bureau of, 74, 215 



Plant Life, Outlines of, 76 



Plant Physiology, Practical, 45 



Plant Physiology, Suggestions for, 43 



Plant Rusts, Culture Methods of Study- 

 ing, 72 



Plant World, 23, 67, 141, 234, 258, 275 



Plantago lanceolata, 64; major, 64 



Plants and Ferns of Connecticut, Cata- 

 logue of the Flowering [review], 128 



Plants, Estimated number of, 274 



Plants found in the Metamorphic 

 Region of Alabama and Georgia, A 

 few more Pioneer, 217 



Plants, from Southern Florida, Some 

 Recently Naturalized, 18 



Plants, Role of Oxidizing Ferments in, 

 253 



Plants, Spalding's Distribution and 

 Movements of Desert [review], 66 



Plants, Water purification, 73 



Platanus occidentalis, 62 



Pleistocene Flora of New Jersey, Addi- 

 tions to the, 261 



Poa, 41 



Podocarpus, 17 



Podophyllum, 91; peltatum, 62, 91 



Pogonia divaricata, 221; ophioglos- 

 soides, 221 



Pollard, C. L., 42, 43, 114 



Polycodium sp., 58 



Polygala Senega, 91 



Polygonum aviculare, 64; Hydropiper, 

 63, 64; pennsylvanicum, 64; sagit- 

 tatum, 62, 63; virginianum, 62 



Polypodium vulgare, 56, 58 



Polyporus squamosus, 142 



Polystichum acrostichoides, 58 



Polytrichum, 8 



Pomeroy, G., 42 



Pond, R. H., personal, 50 



Pontederia cordata lancifolia, 81 



Ponthieva, 90; Brittonae, 90; racemosa, 

 90, 91 



Ponthieva from the Bahamas, A New, 90 



Pool, R. J., personal, 143 



Pope, W. T., personal, 124 



Popular Science Monthly, 22, 23, 259 



Populus, 17; grandidentata, 32, 34; 

 tremuloides, 5, 9 



Porous clay cup, 258 



Porteranthus trifoliatus, 58 



Potamogeton, 129; bupleuroides, 129; 

 perfoliatus, 129 



Potato wart, 276 



Potentilla, 193; bipinnatifida, 194; 

 canadensis, 33, 58, 63; dissecta, 194; 

 filipes, 193; glaucophylla, 194; mon- 



speliensis, 64; pulcherrima, 193; rub- 

 ripes, 193; saximontana, 193; tri- 

 dentata, 56; viridior, 193 



Potentillae of the Arctic- Alpine Zone on 

 Pike's Peak, 193 



Practical Plant Physiology, 45 



President Taft's message, 121 



Prizes, Walker, 26 



Proceedings of the Club, 18, 42, 68, 92, 

 114, 131, 158, 252, 272 



Proserpinaca intermedia, 250; palustris, 

 249; pectinata, 249 



Proserpinaca, A New Species of, 249 



Prosopis velutina, 66 



Proteins, Osborne's Vegetable [review], 

 250 



Prunella vulgaris, 7, 63 



Prunus serotina, 6, 9, 62 



Pseudophoenix Sargentii, 133 



Pseudotsuga, 16; macrocarpa, 20; taxi- 

 folia, 17 



Pteris aquilina, 56, 58, 64 



Pteridium aquilinum, 7 



Puget Sound Marine Station, 144 



Purification plants. Water, 73 



Pyrularia pubera, 61 



Pyrus coronaria, 61; melanocarpa, 33 



Quercus, 17, 33, 41; alba, 5, 32, 33, 61, 

 222; Alexanderi, 227; bicolor, 227; 

 borealis, 130; coccinea, 5, 9, 32, 33, 

 58, 226; digitata, 226; imbricaria, 61, 

 226; lyrata, 227; marylandica, 6; nana, 

 6; pagodaefolia, 226; Phellos, 226, 262, 

 265; platanoides, 227; Prinus, 5, 9, 32, 

 33. 58; prinoides, 6; rubra, 5, 9, 32, 

 33. 56, 58; triloba, 226; velutina, 5, 

 (?) 62 



Rainfall and forests, 74 



Ralfsia, 95 



Rankin, W. H., 144 



Recent Botanical Exploration in Cuba, 



134 

 Reclamation of the Desert in the San 



Bernardino Valley, The, 18 

 Redfield, J. H., 56, 59 

 Reed, F. W., 59 

 Reed, G. M., personal, 124 

 Reflections upon Botanical Education 



in America, Some, 115, 135, 159 

 Relative Humidity, A Plant-Case for 



the Control of, 77 

 Report on a Collecting Expedition to 



Panama, Informal, 94 

 Research Fellowships, 191 

 Representatives from Denmark, 140 

 Researches on Fungi, Buller's, 142, 213 

 Reservation of New Jersey, Forest Park, 



49 



