Index 



469 



PEA FRUIT DEVELOPMENT 21,6 



PEAT-MOSSES, definition of 216 



PEBRINE, peb'rin (F. pebrine, dis- 

 ease of silkworm) 154, 333 



PECTINEUS, pektme'us (L. pecten, 



comb ) 84 



PECTINIBRANCHIA, pek'tmibrang' 

 kia (G. pecten, comb + bronchia, 



gills) 423 



An order of Gastropoda. 

 PECTORAL, pek'toral (L. pectoralis, 



referring to the chest ) 73 



PECTORALIS, pektoral'is (same as 



pectoral ) 79 



PEDICEL, ped'isel (L. pedioulus, 



a small foot) 219 



PEDWELLINA, pedisele'na (N. L r 



pedicellus, pedicel) 311 



PEDICULO IDE8 VENTRICOSUS, 



pedikiiloid'ez (L. pedioulus, louse).. 351 

 PEDIPALPI, pedipal'pi (L. pes, foot 



+ palpus, palp ) 424 



An order of Lipoctena. 

 PEDUNCLE, pedung'kle (L. peduncu- 



lus, a small foot) 311 



PELARGONIUM, pelargonium (G. 

 pelargos, stork, from the resem- 

 blance to a stork's bill) ,285 



A species of Geranium. 

 PELECYPODA, pelesip'oda (G. 



pelekus, ax + pous) 423, 432 



PELLICLE, pel'ikle (L. pellicula, a 



small skin ) 139 



PELVIS, peTvis (L. pelvis, basin, the 



pelvis) 73 



PENNATULA SULCATA, pen&t'ula 



(L. pennatus, winged) 257 



PENNATULACEA,. penatula'sea (L. 



pennatus, winged) 422 



An order of Alcyonaria. 

 PENTASTOMOIDEA, pen'tastomoi'dea 

 (G. pente, five + stoma, mouth)... 



424, 432 



An order of Linguatulida. 



PENTRICHA 155 



PEPPERMINT 236 



PEPSIN, pep'sin (G. pepsis, a digest- 

 ing) 50 



PEPTONES, pep'tdns 50, 270 



PERCEPTION (L. per, through + 



capio, to grasp), definition of 178 



PERENNIALS, peren'nials (L. per, 



through + annus, year ) 233 



PERFECT FLOWERS, definition of. . .229 

 PERIANTH, per'ianth (G. peri, around 



+ anthos, flower) 204, 242 



PERIBLEM, per'iblem (G. peri, around 



+ blema, a coverlet) 229 



PERICARDIAL SINUS, per'ekar'deal 

 (G. peri, around + kardia, heart) . .320 



PERICARDIUM, pere'kar'deum 45, 55 



PERICHONDRIUM, perikon'dreum (G. 

 perl, around + chaite, loose hair) ..112 



P ERIC II AETIUM, pcrike'teum (G. 

 peri, around + chaite, loose hair) . . . 



211, 219 



P E R I D I N I U M, peiidin'ium (G. 



peridines, whirled around) 151 



PERIOSTEUM, perios'teum (G. peri, 

 around + osteon, bone), definition 



of 113 



PERIPATUS, peripa'tus (G. pervpa- 



tos, walk about ) 431 



PERIPHERAL, periff'eral (G. peri, 



around; phero, bear) 275 



Nervous system 66, 67 



Segmentation 106 



PERIPHYLLA HYAGINTHIA, peri- 



fil'a (G. peri, around + phyllon, 



leaf) 257 



PERISARC, per'ysahrk (G. peri -f- 



sarx, flesh ) 254 



PERISSODACTYLA, perisodak'tiia (G. 



perissodaktulos, more than regular 



number of fingers or toes) 429 



PERISTALSIS, per'istal'sis (G. peri 



+ stellein, to place), definition of.. 271 



PERITONEUM, per'itone'um 47 



PERITRIGHA, perrit'rika (G. peri + 



thrix, hair) 421 



PERLOIDEA, perloi'dea (N. L. Perla, 



a proper name + G. eidos, resem- 

 blance) 426 



A sub-class of Pterygogenea. 

 PERMIAN PERIOD (after Perm in 



eastern Russia) .398 



PEROMEDUSAE, pe'romedu'se (G. 



pera, a pouch + L. medusa) . . 251, 422 



PES, pez (L. pes, foot) 46 



PERONEUS, perone'us (G. perone, 



fibula) 84 



PERSONALITY, definition of 175 



PETAL, pet'al (G. petalon, a petal) . .243 

 PETIOLE, pe'teol (L. petiolus, a little 



foot) 204 



PETRIFACTION, petrifak'shun (L. 



petrosus, stony + faoio, to make), 



definition of 399 



PETROHYOID, petrohi'oid (G. petros, 



stone -f- hyoides, Y-shaped) ........ 81 



PETROMYZONTI A, petromizon'tia .... 427 



PEYER, pl'er 381 



PHAGOCYTE, fag'osit (G. phagein, 



to eat + kytos. hollow), definition 



of 200, 212 



PHALANGES, fa'lan'ges (G. phalanx, 



battle-line) 76 ' 



PHALAROPES, falar'opes (G. phala- 



ris, a coot + pous, foot) 419 



PH AN E ROCEPHALA, fan'erosef'ala 



(G. phaneros, visible + kephale, 



head) 423 



PH AN ERO GAMS, faneVogams ( G. 



phaneros + aamos, union) 220 



PHARYNX, far'inks (G. pharynx, the 



throat) 268 



