INDEX 



375 



Plume-bearer, 49 



Plymouth Laboratory, 15, Plate 6 



Poison organs, 41 



Pollicipes cornucopia, 318 



Polychaete worms, 19 



Polykrikos schwarzi, 114, Plate 



40 

 Polynoids, 34 

 Polysiphonia fastigiata, 30 

 Polyzoa, 20, 33, Plate 20 

 Pontellina plumata, 117, Plate 41 

 Porania, 66 

 Porifera, 18 

 Porites, 161 



Poronotus tri acanthus, 83 

 Porphyra laciniata, 359, Plate 127 

 Porpoise, 24, 225 

 Portuguese Man-o'-War, 19, 130 

 Portunus puber, 35 

 Pouchetia polyphemus, Plate 40 

 Prawn, ^sop, 37, 180, Plate 66 

 Prawn fishery, 317 

 Prawns, 37, 41, 49, 63, 190, 



Plate 117 

 Precious corals, 352 

 Preserved fish, 341 

 Pressure, 223 

 Preying animals, 203 

 Pristis, 77 

 Products from fish, 343 ; from sea 



weeds, 359 ; from whales, 345 

 Products of the sea, 341 

 Protection of timber, 151 

 Protective coloration, 42 

 Protective methods of shore 



animals, 42 

 Protozoa, 17, 187, 213 

 Pseudoscarus, 166 

 Pteropod ooze, distribution of, 



Plate 19 

 Pteropods, 22, 56, 118, 200 

 Purification of shellfish, 310, 



Plate ill 

 Purpura 32, Plate 13 

 Purse seine, 283 



Purse sponge, 33 

 Pycnogonida, 22 

 Pyrocystis noctiluca, 187 

 Pyrosoma, 120, 192 



QUEEN scallop, 74, 306, Text 

 fig. 11 ; plate 110 



RACES of herring, 330 

 Radiolarian ooze, Plate 21 ; dis- 

 tribution of, Plate 19 

 Radiolarians, 18, 57, 117, 213, 



Plate 21 

 Rag- worm, 34 

 Rat- tail, 91, Plate 33 

 Rays, 208 



Razor-shell, 38, 48, Text fig. 7 

 Red clay, 57, distribution of, 



Plate 19 

 Red coral, 352, Text fig. 65, 



Plate 122 ; distribution of, 



352 

 Red herring, 342 

 Red mullet, 90 

 Red Sea, 217 

 Reef-building worms, 39, Plate 



18 

 Regeneration of lost parts, 43 



in Crustacea, 43, Text fig. 6 

 Remora, 95, Text fig. 16 

 Reproduction of anemones, 52 



of shore animals, 49 

 Reptilia, 24 

 Research on herring, 320, 323 



on plaice, 319, 321 

 Research, Methods of, 254 

 Research ships, 267, Plate 97 

 Respiration, 46 

 Reversing thermometer, 260 

 Rhizocrinus lofotensis, 71, Plate 



25 

 Rhodymenia palmata, 31, 359 

 Ring trawl fishing, 265, Plate 96 

 Rissoa, 62 

 Robber crab, 46 



