5o8 



INDEX. 



Petal, 476 



Petiole, 462, 474 



Phalanges, manus, 70; pes, 73 



Pharynx, Earthworm, 241, 253, 

 255; Frog, 5 



Phloem, Bean, 463, 472 ; Fern, 

 446, 448, 449, 453 



Phloem-sheath, 447, 453 



Phosphorus, 379, 403 



Photometric Zoospores, 395 



Pia mater, 27, 96 



Pineal gland, 26 



Pinnule, 443, 447 



Pistil, 460, 478 



Pith, 462, 472 



Pits, 446, 472 



Pitted vessels, 464, 473 



Pituitary body, 26, 99 



Plasmolysis, 397 



Pleomorphic Bacteria, 411 



Pleurobranchiae, 221 



Pleurococcus, 389 



Pleuron, 192 



Pleuropentoneal cavity, 7, 39, 41; 

 membrane, 8, 42, 43 



Plexus, brachial, 31 ; epidermal, 

 245; excretory, 261; lumbo- 

 sacral, 31, 103 



Plumule, 461, 480 



Pod, 461 



Podobranchioe, 220 



Polar plate, 139 



Pollen, 460, 465, 477 



Pollen-sac, 465, 477; tube, 461, 

 480 



PoUinodium, 420 



Pore-canals, Crayfish, 203; Mus- 

 sel, 341 



Posterior commissure, 10 r 



Potassium, 379 



Pre-hallux (see Calcar) 



Pre-maxilla, 9, 60 



Pre-nasal process, 13, 64 



Primine, 478 



Primordial cell, 391 



Primordial utricle, 397, 404, 417, 



433 

 Procephalic process, 202 



Processus spiralis, 140 



Pro-embryo, 435 



Pro-otic, 60 



Propodite, 196 



Pro-renal duct (see Segmental 

 duct) 



Prosencephalon, 97 



Prostate, 290 



Prostomium, 249 



Protein, 379, 390, 467 



Proteus animalcule, 369 — 376 



Prothallus, 450, 457, 466 



Protococcus, 389 — 395 



Protophloem, 447, 454 



Protoplasm, 379 



Protoplasmic movement, Anacha- 

 ris, 442; Chara, 440; Nettle- 

 hair, 442 ; Tradescantia, 441 ; 

 Vallisneria, 442 



Protopodite, 177, 193, 239 



Protoxylem, 446, 454, 472 



Pseudopodia, 122, 370, 374 



Pteris, 443—459 



Pterygoid, 61 



Pubis, 71 



Pulmonary sac, 274, 282 



Putrefaction, 410 



Pylangium, 18 



Pylorus, 15, 46 



Pyrenoid, 398, 404 



Quadrate, 65 

 Quadrato-jugal, 61 



R 



Rachis, 288 



Radial bundle, 465 



Radicle, 461, 480 



Radius, 70 



Radula, 287 ; sac of, 285 



Rana esculenta — temporaria, 1 — 



172 

 Receptaculum ovorum, 269 

 Receptaculum seminis, 292 

 Rectum, Mussel, 337 ; Snail, 283 



