514 



INDEX. 



The numbers refer to the pages. 



Optical differentiation, 20, 22, 37 



Orange G, 184, 187, 189 



Orcein, Israel's method, 229 ; Unna's, 

 345, 347 



Orcein-Wasserblau mixture, 334 



Orchella, 229 



Orientation, in paraffin, 86, 87 ; in 

 celloidin, 106 ; of blocks, 88 ; of 

 ova, 297 



Origanum oil, 71 



ORE, Marchi's nerve-stain, 415, 417 



Orseille, 229 



ORTH, " Formol-Muller," 66, 380; 

 lithium carmine, 147 



Orthoptera, embryology, 611 



Osmicacid, generalities, 28, 31 ; how 

 to keep, 28 ; regeneration of, 29 ; 

 fixation with, 29; after-treat- 

 ment, 30 ; characters of the fixa- 

 tion, 31 ; blackening of fat, 352 ; 

 mixtures, 31, 35 et seq. ; sub- 

 limate mixtures, 50 ; picric 

 mixtures, 59 ; stains with pyro- 

 gallol, pyroligneous acid or tan- 

 nin, 226; for hardening, 381; 

 stains for medullated nerve, 416, 

 417 ; for maceration, 273 



Osmic-bichromic mixtures, 37, 38 



Osmio-subliinate mixtures, 50 



Osmium haematoxylin, 168 



Osmium, see Osmic acid. 



Osmium -carmine, 466 



Osmium chloride, 52 



Osmosis, to avoid, 3 



OSTERGREN, ether-water, 15 ; Nemer- 

 tians, 464; Dendrocoelum, 467; 

 Synapta, 467 



Ostracoda, 454 



Otocyst of M ysls, 456 



Ova, see Embryological methods. 



Ovensj 85 



OVERTON, bleaching, 30, 33; fixing 

 with iodine, 53 ; fixing Algae, 44 



OVIATT and SARGENT, injecting, 258 



Oxalic acid, for maceration, 275 



Oxychloride of ruthenium, 227 



Oxygenated water, for narcotisation, 

 18 ; for bleaching, 30, 285 



P. 



PACAUT, picro- sublimate, 50 



PACINI, preservative liquids, 239 



PAL, nerve-stain, 411 ; Golgi's subli- 

 mate method, 433 



PALADINO, nerve-stain, 418 



Palladium chloride, for fixing, 52 ; 

 staining, 227, 418 ; decalcifying, 

 280 



Palladium chloride, 52, 227, 280, 

 418 



Pancreas, 370 



Pancreatin digestion fluid, 276, 277 



PANETH, goblet-cells, 369 



Panoptic stain, 363 



PANSCH, starch injection, 268 



Paper cell mounting method, 250 



Paper trays and thimbles, 77, 78 



Papillae foliatae, 335 



PAPPENHEIM, plasma cells, 349, 351 ; 

 panoptic stain, 363 ; blood-plates, 

 367 ; chemistry of staining, 129 ; 

 neutral dyes, 132 ; methyl green 

 and pyronin, 183, 350 ; haemo- 

 poietic tissues, 366; sublimate 

 fixative, 48 



Paracarmine, 149 



Paraffin, for preserving material, 5 ; 

 solvents of, 81, 82; imbedding 

 in, 81 87, orienting in, 86 ; cut- 

 ting, 88 96; ribbons, 96; coat- 

 ing blocks of, 97 ; electrification 

 of, 97 ; masses recommended, 98 ; 

 mounting sections, 98 ; ascertain- 

 ment of melting point, 99 ; over- 

 heated, 99 ; cement, 250, 252 



Paraffinum liquidum, 235 



PARAVICINI, neurofibrils, 402 



Paris violet, 172 



PARKER, dehydration, 4; methylen 

 blue, 208; turpentine cement, 

 252; bleaching, 286; eyes of 

 Arthropods, 457 



PARKER and FLOYD, formol for 

 brain, 377 



Parma blue, 195 



Parolein, 248 



Parthenogenesis, 287 



