238 



Animal Micrology 



Ova, 210. 

 Ovary, 210. . 

 Over-correction, 157. 

 Oviduct, 210. 

 Ovogenesis, 210. 

 Oxalic acid, 87, 177. 

 Oxyphil granules, 175. 



Pacinian corpuscles, 209. 

 Pancreas, 199; granules of , 198. 

 Paneth, cells of, 198. 

 Paper box for paraffin imbedding, 37. 

 Papillae of tongue, -00. 

 Paracarmine, 169, 184. 

 Paraffin, 12, 23 ; oven, 12; dirty, 43. 

 Paraffin-asphalt-rubber method, 44. 

 Paraffin block, trimming, 39. 

 Paraffin method, 26; imbedding and section- 

 ins 37; staining and mounting, 49; for 

 delicate objects, 54; compared with cel- 

 loidiu method, 63. 

 Paramoecium, 215, 217. 

 Parfocal, 156. 

 Parotid gland, 199. 

 Pathogenic bacteria, 111. 

 Patton, 125. 

 Pearl, 167. 

 Pectinatella, 222. 

 Pedesis, 146. 



Pencil, glass-marking, 1, 42. 

 Penetration, 156. 

 Penis, 210. 



Peroxide of hydrogen, 9, 24. 

 Peyer's patches, 199. 

 Pfluger's egg tubes, 210. 

 Phloroglucin method, 189. 

 Picric acid, 18, 168, 184, 189. 

 Picric alcohol, 169. 

 Picro-acetic, 117, 122, 123, 169. 

 Picro-carmine, 76, 79, 168. 

 Picro-hematoxylin, 177. 

 Picro-sublimate, Rabl's formula, 169; vom 



Rath's formula, 169. 

 Picro-sulphuric acid, 117, 121, 169. 

 Pig embryos, to obtain and prepare, 120, 121 ; 

 stages necessary for study, 120; placenta- 

 tion of, 121 ; orientation of, 121. 

 Pigment cells, 193. 

 Pigments, to remove, 45. 

 Placenta, 174, 260. 

 Placentation, 121. 

 Planaria, 90, 219. 



Platino-aceto-osmic mixture, 170. 

 Plumatella, 222. 

 Pneumococcus, 111. 

 Polariscope, 156. 

 Polypoid forms, 219. 

 Positive eye-piece, 137. 

 Potassium bichromate, 162. 

 Pouring liquids, 6. 

 Preparation of reagents, 7. 



Preservation of anatomical specimens, 31. 



Preserving, 18, 30; mixture, 30; objects im- 

 bedded in paraffin, 43; sections cut by the 

 freezing method, 7U. 



Prickle cells, 213. 



Principal axis of lens, 134. 



Protococcus, 94. 



Plotoplasmic currents, 193. 



Protozoa, 95, 167; cultures, 215; feeding, 216; 

 permanent mounted preparation, 217; 

 quieting, 216; staining, 216. 



Purkinje cells, 73, 209; fibers, 194. 



Pyrogallol, 170, 185. 



Pyroxilin, 23. 



Rabbit, embryology of, 119; dissection of, to 

 obtain embryos, 119, 120; ova, time to ob- 

 tain various stages, 119. 

 Rabl, 169. 



Radula of snail, 94. 



Ranvier, one-third alcohol, 188; picro-car- 

 mine, 185; cross of, 74; nodes of, 208. 



Rath, O. vorn, 169. 



Rating of objectives and oculars, 144. 



Rays of light, 133. 



Razor, section, 1, 33. 



Reagent bottles, 4. 



Reagents and their preparation, 7 ; also 

 Appendix B. 



Reconstruction of objects from sections, 127 ; 

 in wax, 127 ; geometrical, 129. 



Reconstruction points, 125. 



Records, card, 6, 28; calendar, 6. 



Rectified spirit, 13. 



Reduction division, 193. 



Refraction of light, 133. 



Remak's fibers, 208. 



Removal of liquid from slide, 55. 



Reproductive organs, 210. 



Resolving power, 156. 



Respiratory organs, 211. 



Restaining old mounts, 58. 



Reticular connective tissue, 197. 



Retina, 165, 16S, 188, 204. 



Reversing sections, to avoid, 40. 



Rhigolene freezing attachment, 68, 70. 



Ripart and Petit, 164, 187. 



Rolling of paraffin sections, 46. 



Romanowsky stain, 103. 



Rosin, 183. 



Rotifers, 222. 



Rubbing sections off the slide, to avoid, 56. 



Rubin S, 176. 



Rules, general, 6. 



Saf ranin, 10, 20, 165, 185 ; formula, 185 ; and 



gentian violet, 186. 

 Salivary gland, 199, 200;. granules of, 198; of 



cockroach or cricket, 77. 

 Salycilic acid, 170. 

 Sarcinae, 108. 

 Sarcolemma, 205. 



