5oS 



INDEX. 



Petal, 476 



I'etiole, 462, 474 



I'halanycs, niamis, 70; pes, 73 



Pharynx, Karlhworm, 241, 253, 

 255 ; Frog, 5 



Phloem, Pean, 463, 472; Fern, 

 446, 44S, 449, 453 



Phloem -sheath. 447, 453 



Phosphorus, 379, 403 



I'iiotometrie Zoospores, 395 



Pia mater, 27, 96 



I'ineal gland, 26 



Pinnule, 443, 447 



Pistil, 460, 478 



Pith, 462, 472 



Pits, 446, 472 



I'itted vessels, 464, 473 



Pituitary body, 26, 99 



Plasmolysis, 397 



Pleomor])hic Bacteria, 41 1 



Pleurobranchia^, 221 



Pi.EUROCoccus, 389 



Pleuron, 192 



Pleuroperitoneal cavity, 7, 39, 41; 

 membrane, 8, 42, 43 



Plexus, brachial, 31 ; epidermal, 

 245; excretory, 261; lumbo- 

 sacral, 31, 103 



Plumule, 461, 480 



Pod, 461 



Podobranchice, 220 



Polar plate, 139 



I'ollen, 460, 465, 477 



Pollen-sac, 46^, 477; tube, 461, 

 4S0 



Pollinodium, 420 



Pore-canals, Crayfish, 203 ; Mus- 

 sel, 341 



Posterior commissure, 10 1 



Potassium, 379 



Pre-hallux (see Calcar) 



I're-maxilla, 9, 60 



Pre-nasal process, 13, 64 



I'rimine, 478 



Primordial cell, 391 



I'rimordial utricle, 397, ^04, 417, 



Procephalic process, 202 

 Processus spiralis, 140 



Pro-embiyo, 435 



Pro-otic, 60 



Pro))otlite, 196 



Pro-renal duct (see Segmental 

 duct) 



Prosencephalon, 97 



I'rostate, 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; 

 \'allisncria, 442 



Protopodite, 177, 193, 239 



Protoxylem, 446, 454, 472 



Pseudo-hearts (see Circum-oeso- 

 phageal vessels) 



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 



QrADRATK, 65 

 Quadrato-jugal, 61 



U. 



Rachis, 288 



Radial bundle, 465 



Radicle, 461, 480 



Radius, 70 



Radula, 287 ; sac of, 285 



Rami esciilenta — icmporaria, i — 



172 

 Reccptaculum ovorum, 209 

 Receptaculum seminis, 292 

 Rectum, Mussel, 337 ; Snail, 283 



