INDEX 



79 



Oviduct, of earthworm, 27; of frog, 37. 



Oviparous, 38, 39. 



Ovoviviparous, 38, 39. 



Ovum, of Ascaris, 41; of earthworm, 34; 



of Volvox, 24. 

 Oxidation, in metazoa, 18; in Parame- 



cium, 15. 



Paleontology, 70. 



Palinurus, 55. 



Pancreas, 17; of frog tadpole, 44. 



Paramecium, 14, 15, 32; conjugation of, 



34. 



Paramylum, 10. 

 Parietal bones, 60. 

 Parthenogenesis, 35. 

 Parthenogonidia, of Volvox, 24, 25. 

 Pecten, 55. 



Pelage, regional differences of, 69. 

 Pelomedusidae, 60. 

 Pelvic girdle, 47; of frog, 48, of man, 47; 



of pigeon, 49. 

 Pentadactyl limb, 47. 

 Pepsin, 17. 

 Peranema, 14. 

 Perisarc, of Obelia, 30. 

 Peritoneum, of earthworm, 29. 

 Phacus, 10. 

 Phalanges, 47; of frog, 48; of man, 47; 



of pigeon, 48, 49. 

 Pharynx, of earthworm, 28. 

 Phototaxis, 66. 

 Phyla, 51-56. 

 Physalia, 31. 

 Pineal eye, 59. 

 Pinna, 55. 

 Pisces, 56. 

 Plains, 67. 

 Planaria, 53, 65. 

 Plastid, 9. 

 Plastron, 60. 

 Platyhelminthes, 53, 54. 

 Pleodorina, 23, 25; P. calif ornica, 23. 

 Plethodon, 58. 

 Pliohippus, 73. 

 Polar body, first, in Ascaris, 41; second, 



in Ascaris, 41. 

 Polistes, 55. 

 Polygyra, 55. 



Polymorphism, in Obelia, 31. 

 Porcellio, 66. 

 Porifera, 52. 

 Portuguese Man-of-war, 31. 



Poterioceras, 71. 

 Prairies, 67. 

 Precoracoid, 47. 

 Procoelous, 60. 

 Proglottis, 53. 

 Prophase, 20, 21. 

 Prostomium, of earthworm, 26. 

 Protein, 17. 

 Proteus, 58. 

 Protoplasm, 8, 9, 13. 

 Protozoa, 9, 33, 51. 

 Pseudopodium, 11. 



Ptarmigan, willow, distribution of, 68. 

 Pubis, 47; of frog, 48; of man, 47; of 

 pigeon, 49. 



Quadrate, 58, 59. 

 Quadruped, 57. 

 Quince seeds, 14. 



Radial canals, of Obelia, 31. 



Radial symmetry, 54. 



Radiating canals, in Paramecium, 15. 



Radio-ulna, of frog, 48. 



Rpdius, 47; of man, 47; of pigeon, 48. 



ftana pipien&, 37. '- , >' 



Reactions, 65, 66. , 



Recapitulation ;ifieory .; 46/, 



Rectal chamber, of dragorifly nymph, 65. 



Reduced number of chromosomes, 42. 



Reproduction, 32; asexual, 32, 36; 



methods of, 38; sexual, 32, 34, 36. 

 Reproductive cells, of Volvox, 24. 

 Reproductive organs, of frog, 37, 38; of 



frog tadpole, 44; of Obelia, 31; of tape- 



worm, 53. 

 Reproductive system, of earthworm, 27; 



of frog, 37, 38. 

 Reptilia, 57, 58. 

 Respiration, in metazoa, 18; in Para- 



mecium, 15. 



Rhynchocephalia, 58, 59. 

 Ringer's solution, 64. 

 Road runner, distribution of, 68. 

 Rotation, of protoplasm, 13. 

 Rotifer, 14; parthenogenesis in, 35. 



Salamander, 12, 16, 21, 22. 



Sahentia, 58. 



Scaphites, 71. 



Scapula, 47; of man, 47; of pigeon, 48. 



Schedule of laboratory work, 1, 2. 



