338 



INDEX 



Nissl's methylene blue, 117, 310 



Nitric and chromic acids, for 

 hardening tissue, 299 



Nitric and picric acids, for harden- 

 ing tissue, 302 



Normal salt solutions, 66 



Nose, newt, 217-19-20 



Nuclear division, stages of, 286-7 



Nucleus dentatus, 258 



Numerical aperture, 8 



Objectives, achromatic, 8 ; angle 



of aperture, 8 ; apochromatic, 8 ; 



equivalent focal distance, 8 ; 



homogeneous oil -immersion, 8; 



initial magnifying power, 8 ; 



numerical aperture, 8 ; working 



distance, 9 



Ocular micrometer, 33 

 Oesophageal glands (frog's), 171 

 Oesophagus, structure, 168 ; 



hardening and staining, 171 

 Oil-immersion lenses, 7, 9 

 Olfactory mucous membrane, 



218-9 

 Optic chiasma, 270; tract, 268; 



thalamus, 270 



Orange G and aniline blue, 310 

 Orbital gland (dog), 161 

 Orcein (for staining elastic fibres), 



311 (see also Elastic tissue) 

 Osmic acid, as dissociating fluid, 



293 ; for hardening, 289 ; with 



chromic acid, 299 

 Ossification, 86 

 Osteoblasts, 87 

 Osteoclasts, 87 



Ovary, mammal, 276-9 ; harden- 

 ing of, 284 

 Ovum, 277 

 Oxyphil granules, 17, 23, 79 



Pacinian bodies, 211, 212, 214 



Pal, method of staining medul- 

 lated fibres, 245-6 



Pancreas, 180; resting and ac- 

 tive, 185 



Paraffin, dissolving, from sec- 

 tions, 43 ; staining and mount- 

 ing sections imbedded in, 43-8 ; 

 imbedding in, 53, 55; influence 



of melting point on section 

 cutting, 57 



Parathyroid, 205 



Parenchymatous cartilage, 69 



Parotid gland, 156-8 



Perenyi's fluid, 299 



Peritoneal surface of diaphragm, 

 epithelioid cells, 144-5 



Peyer's patch, 177, 178-9 



Phosphorus, method of detecting, 

 325 



Pia mater, 135, 233 



Picric acid, staining with, after 

 staining, 41, 63 ; in combina- 

 tion with haematoxylin and ru- 

 bin S, 41 ; with acid magenta, 

 310: hardening with, 298; com- 

 bined with mercuric chloride, 

 302 ; nitric acid, 302 ; sulphuric 

 acid, 302 



Picro-carmine, staining sections 

 with, 35-7; staining isolated 

 cells with, 93, 190; prepara- 

 tion of solutions, 308 



Pigment, destruction of, 327 ; 

 cells, frog's web, 76-7 



Pithing, 330 



Pituitary body, 202, 205 



Platelets, frog's, 18; human, 

 24 



Platinum chloride and chromic 

 acid for hardening, 299 



Polarized light, examination of 

 striated muscle by, 103, 106 



Pons varolii, 257-8 



Potassium bichromate, for hard- 

 ening, 299 ; and cupric sul- 

 phate, mercuric chloride, so- 

 dium sulphate, 300 



Potassium hydrate for isolating 

 cells, 94, 95, 106 



Prostate gland (dog), 284 



Purkinje's cells, of heart, 98; of 

 cerebellum, 273, 274 



Pyramids, decussation of, 240 



Quinoline blue for staining fat, 

 80 



Eam6n y Cajal, treatment of 

 retina, 227 ; modification of 



