SECTION FOUR 



Nucleic acids, differentiation of, Kur- 



nick's method, 297 

 Nucleic acids, differential staining, 



mechanism of, 7 

 Nucleoli, 77, 93, 149, 167, 198 

 Nyka's stain for typhus rickettsia in 



ling, 299 



Obelia, 265 



Oesophageal epithelia, 98 



OG6, Papanicolaou, recipe, 341 



Ohlmacher's fluid, 537 



Oil red O-Carbovvax 400, a rapid 



stain for lipids, 51 1 

 Olive oil, refractive index, 568 

 OUett's stain for bacteria in sections, 



322 

 Optoil, notes on, 526, 531 

 Oral epithelia, 99 

 Oral mucosa, cornified, 342 

 Orange fuchsin. Squire's recipe, 562 

 Orange G, pH, etc., 22, 120 

 Orange G, 7, 11, 13, 50, 84-5, no, 



116, 201-2, 341, 349, 562 

 Orange G - acetone, 300 

 Orange G, acidified, 120 

 Orange G - acid green L in clove oil, 



142 

 Orange G - acid green - azocarmine - 



haematoxylin, 141 

 Orange G - aniline blue, 140, 282-3, 



285, 331, 548 

 Orange G - aniline blue, acetic, 139 

 Orange G for chromophobes, 123-4 

 Orange G - aniline blue - acid fuchsin, 



287 

 Orange G - aniline blue - congo red, 



174 

 Orange G - aniline blue - resorcinol, 



17s 



Orange G - Biebrich scarlet, 402 



Orange G - carbol fuchsin - haema- 

 toxylin, 160 



Orange G - cresofuchsin - carmine - 

 aniline blue, 178 



Orange G - crystal violet (Bensley) for 

 zymogen granules, 327 



Orange G - fast green, 230, 397 



Orange G - fast green - aniline blue, 

 386 



Orange G - fast green - safranin - cry- 

 stal violet, 396 



Orange G - glucose differentiator & 



decolorizer, 202 

 Orange G - haematoxylin, 1 10 

 Orange G - light green - chromotropc 



2R, 116 

 Orange G - light green - phospho- 



tungstic acid, 349 

 Orange G - orcein - aniline blue for 



elastin, keratin & collagen, 330 

 Orange G - phosphomolybdic acid, 



178 

 Orange G - phosphotungstic acid, 



336 

 Orange G - picric acid, 375 

 Orcein, pH, mol. wt., etc., 21, 56 

 Orcein for myelin sheaths of dental & 



paradental tissues, 328 

 Orcein - aniline blue, 347 

 Orcein - aniline blue - orange G for 



elastin, collagen & keratin, 330 

 Orcein - aniline safranin for elastic & 



connective tissues, 331 

 Orcein - celestin blue - light green, 



166 

 Orcein - gallocyanin - acid alizarin 



blue - alizarin viridine, 214 

 Orcein - Giemsa stain for syphylitic 



tissues, 332 

 Orcein - methylene blue for elastic 



fibres & connective tissues, 329 

 Orcein - peracteic acid - Halmi stain 



for connective tissues, 348 

 Orcein - periodic acid - aniline blue - 



silver nitrate, 359 

 Orcein - picro fuchsin for elastic & 



collagen fibres, 334 

 Orcein, Rubens-Duval recipe, 166 

 Orcein - silver carbonate - aniline blue 



- fast green, 403 

 Orcein, Unna - Taenzer, 329, 332, 562 

 Orcein- Van Gieson stain for elastic & 



collagen fibres, 334 

 Orcein - water blue - sabranin for 



epithelial fibres, 459 

 Orcein - water blue (Unna) for col- 

 lagen fibres, 397 

 Orcinol - new fuchsin for elastin, 335 

 Origanum balsam, 270 

 Origanum oil, 380, 568 

 Orr's fixative, recipe, 537 

 Orseillin BE, 572 

 Orthohposphoric acid, 9 

 Orth's fluid, 482 



621 



