378 



INDEX 



Primitive streak, 234 



Proboscis, Bee, 125 



Processes, articulating, 179 ; trans- 

 verse, 178 



Proctodeum, 229 



Pronephric duct, Frog, 232 



Pronephros, Frog, 202, 232 



Prootic bones, 171 



Propolis, 136 



Prosopyles, 54 



Prostomium, Earthworm, 82 



Protein, synthesis, 10 



Proteins, 9, 10, 188 



Prothorax, 116, 125 



Protoplasm, 3-17 (see Cytoplasm) 



Protoplasmic movement, 15-17 ; lab- 

 oratory, 255 



Protoplast, 5 



Protopodite, 100 



Prototheria, 160, 236 



Protozoa, 23, 27, 29, 30, 33 



Proventriculus, 118, 128 



Pseudopodia, 20, 61 



Pteridophyta, 11 



Pterygoid bones, 176 



Ptyalin, 188 



Pubis, 180 



Pulmocutaneous arteries, 195 



Pulmonary artery, 195, 197 



Pulmonary veins, 195, 197 



Pulvillus, 117, 126 



Pupa, 122 



Pupil, 219 



Pyloric caeca, 76 



Pyloric chamber, 104 



Pylorus, 183, 186 



Pyrenoids, Euglena, 30 ; Spirogyra, 

 12 



Quadra to-jugal bones, 176 

 Quahaug, 139 

 Queen, Bee, 123, 131 

 Queen-cells, 135 



R 



Radial canals, 70, 77 

 Radiata, 74 



Radiation, adaptive, 160 

 Radio-ulna, 180 

 Radius, 180 



Rays, 155 



Reaction, avoiding, Paramecium, 47 



Receptacles, seminal, 93, 109, 121, 

 131 



Rectal caeca, 78 



Rectum, 118, 129 



Red corpuscles, 193 



Reflex action, 97, 221 



Regeneration, Crayfish, 103-104 ; 

 Earthworm, 94 ; Hydra, 64 



Renal aperture, 146 



Renal portal systems, 195 



Renal veins, Frog, 194 



Reno-pericardial aperture, 146 



Reproduction, Amoeba, 25 ; asexual, 

 25, 31, 37, 44, 50, 56, 63, 69; bi- 

 nary fission, 25, 31, 44, 45, 50, 64; 

 budding, 56, 63; Euglena, 31; 

 Grantia, 56 ; Grasshopper, 120, 

 121 ; Hydra, 63 ; Obelia, 72 ; Para- 

 mecium, 44 ; sexual, 64, 72, 79, 

 92-95, 108-110, 120, 121, 130, 

 131, 153 ; Starfish, 79 ; Volvox, 37 ; 

 Vorticella, 50 (see Reproductive 

 system, Development) 



Reproductive system, Bee, 130 ; Bird, 

 232; Clam, 146; Crayfish, 108; 

 Earthworm, 92 ; Frog, 204 ; Grass- 

 hopper, 120 ; Hen, 232 ; Mammal, 

 236 



Reptilia, 157 



Respiration, Amoeba, 24; Bee, 

 129; Clam, 145; Crayfish, 107; 

 Earthworm, 90; embryonic, 231, 

 236, 238; Euglena, 31; Frog, 189, 

 191, 197, 198, 201; Grasshopper, 

 119; Grantia, 56; Hydra, 63; 

 Obelia, 71 ; Paramecium, 43 ; Pleu- 

 rococcus, 1 1 ; processes of, 8 ; vs. 

 photosynthesis, 31 ; Starfish, 78 ; 

 Yeast, 13 (see Respiratory system) 



Respiratory movements, 190, 191 



Respiratory system, Bee, 129 ; Clam, 

 145 ; Crayfish, 107 ; Earthworm, 

 90; Frog, 189; Grasshopper, 119 ; 

 Insects, 113; Starfish, 78 



Retina, 219 



Ring canal, 77 



Rhizopoda, 27 



Rodentia, 161 



Rods, of eye, 219 



Roots, teeth, 178 



Rostrum, 100 



