524 



GENERAL INDEX 



Peru; medanos or moving sand-dunes, 

 270, 271, 493 



Peruvian (Humboldt) Current, its in- 

 fluence on climate, 271, 272, 275 



Peterson, P., respecting Foula in the 

 Shetlands, 34 



Petherick, on drift-wood in high northern 

 latitudes, 45 



Petiver, J. ; West Indian seeds on Euro- 

 pean beaches, 41, 44 ; Ipomoea tuberosa, 

 33, 161, 163; Manicaria saccifera, 128; 

 Sacoglottis amazonica, 137 



Petrels ; West Indian drift seeds in their 

 crops, 31, 32; as seed-dispersers in the 

 Southern Ocean, 500 



Philodendron, 16 



Phoebe, 412 ; P. barbusana, 408 



Phoenix canariensis, 408 



Phoradendron, 194 



Phragmites, 179, 252, 377 



Phyllanthus, 168 ; P. epiphyllanthus, 280, 

 281, 283, 285, 288, 292; P. falcatus, 85, 

 210 



Physalia (Portuguese man-of-war), in 

 beach-drift; south of England, 29; 

 Azores and Canaries, 38 



Physalis peruviana, 491 



Phytelephas macrocarpa (Vegetable 

 Ivory), 17 



Piazza, Captain; bottle-drift on east 



coast of Africa, 303 

 Picconia excelsa (Notelsea excelsa), 369, 



376, 386, 392, 401, 407, 408, 410, 418, 



435 



Pico (island and mountain of). See 



under Azores. 

 da Vara, San Miguel, 382, 383, 430- 



432 



Topo, corrected altitude of, 365, 379 



Pigeons, as seed-dispersers. See under 

 Birds. 



Pigs, agents in dispersing seeds, 112, 144, 

 175, 243 



Pines, in the Macaronesian islands, 408- 

 410 



Pinus canariensis, 408, 409 



" Pique," H.M.S., bottle-drift from Ascen- 

 sion, 482 



Piscidia erythrina, 208, 209 



Pistias, 3, 16, 104, 105, 107 



Pithecolobium ; represented in Turks 

 Islands, 287, 292; P. filicifolium, 111 



Plantago; mode of dispersal, 418, 421; 

 PI. coronopus, 384, 404, 421; PI. 

 lanceolata, 390 ; PI major, 390 



Plate River (La Plata), estuary of, con- 

 cerning the distribution of its seed- 

 drift, 62, 73, 74, 81 



Plocama pendula, 408, 448 



Pluchea, 285, 292 



Plukenet, on Manicaria saccifera, 31, 128, 

 129 



Podocarpus, 294, 327 



Polycarpon tetraphyllum, 491 



Polygala vulgaris, on Pico, 370, 371, 372, 



374, 377, 379, 386, 387, 402, 417, 435 

 Polygonum; dispersal by birds, 418, 421 ; 



P. glabrum, 105-107; P. maritimum, 



219, 384, 388, 404, 421 

 Polymorphous species, 313, 314, 322 

 Polytrichum, growths of, in the Azores, 



371, 377, 379, 382, 383, 387; falling 



rate of spores and their dispersal by 



winds, 424 

 Pontederia (Water Hyacinth), 3, 16, 105, 



107 



Pontoppidan, E., on the West Indian 

 seeds of Scandinavian beaches, 21, 35, 

 41, 44 



Populus (Poplar), Portuguese names, 434 

 Porto Pym (Azores), beach plants, 218, 

 219, 384 



Rico, stranded bottle-drift, 56, 58, 



62 



Portsmouth (England), West Indian seed 

 stranded, 28 



Portugal; stranded bottle-drift, 52, 53, 

 68; bottles cast into the sea off the 

 coast, 57, 66 



Portuguese Current, 54, 56 



Portulaca ; P. halimoides, 109 ; P. oleracea 

 277, 279-281, 291, 477, 478; peculiar 

 species in islands, 478 



Potamogeton ; fruits in floating river and 

 pond-drift, 16, 420; dispersal by water- 

 fowl, 417, 420; P. fluitans, 107; P. 

 natans, 378; P. plantagineus, 104, 105, 

 107; P. polygonifolius, 371, 378, 380- 

 382, 387, 403, 420 



Potentilla tormentilla, 371, 377, 379, 387, 

 402, 417, 419 



Pouchet, F. A., currents in the southern 

 hemisphere, 39, 44 



Povelsen, on drift-wood in high northern 

 latitudes, 45 



Praeger, R. Lloyd ; West Indian seeds on 

 the Irish coasts, 31; falling rates of 

 seeds in connection with dispersal by 

 winds, 354, 422-425, 439; seed- 

 buoyancy, 447, 473 



Praia, Sir D., on the wood of buried 

 Juniper trees in the Azores, 395 



Premna, type of buoyancy in " stones " 

 of drupaceous fruits, 234 



Prickles in beach-drift, 164 



Prickly Pear. See Opuntia. 



Prickly- Yellow (Zanthoxylum), prickles 

 in beach-drift, 164 



Primocarex, 345, 357, 501 



Primulacese, 314, 315 



" Prince Eugene," s.s., bottle-drift from 

 off the Amazon to Florida, 75, 445 



Prioria copaifera, fruits in beach-drift, 

 6, 17 



Problem plants. See Acacia farnesiana, 

 Campanula vidalii, Chrysobalanus icaco, 



