CONTENTS 



Page 



Polyvinyl Lactophenol, for embedding brittle specimens 



of wood for sectioning . . . . . . . . . . 272 



Safranin - Acid Fuchsin - for spermatozoids, zoopores etc. 276 



Safranin - Aniline Blue, for gymnosperm ovules, arche- 



gonia, embryos, angiosperm stems and roots, etc. . . 273 



Safranin - Aniline Blue for cellulose walls, cytoplasm, 



and for chromosomes . . . . . . . . . . 274 



Safranin - Dianil Blue G, for differential staining of 



peronosporaceae . . . . . . . . . . . . 274 



Safranin - Fast Green, FCF, a non-fading, general-pur- 

 pose stain . . . . . . . . . . . . . . 277 



Safranin - Fast Green, FCF - Cellosolve, a rapid, non-fad- 

 ing stain in place of Sanfranin Light Green - Clove Oil 275 



Safranin - Light Green - Cellosolve, a rapid general- 

 purpose stain . . . . . . . . . . . . 278 



Safranin - Light Green - Clove Oil, a general-purpose 



srain .. .. .. .. .. .. ,. 270 



Safranin - Picro Aniline Blue, a rapid and simple 



method of demonstrating hyphae in wood sections . . 279 



Safranin - Tannic Acid - Fast Green, FCF for roots 



and stems . . . . . . . . . . . . . . 280 



Scarlet R or Sudan 3 - Ethylene Glycol, an improved 



technique for staining fat . . . . . . . . 281 



Scarlet R for demonstrating fats . . . . . . . . 282 



ScHULZE Solution (Chlor Zinc Iodine) for cell walls, 



proteins and starch . . . . . . . . . . 282 



Tetrazolium Salt, for testing the viability of seeds . . 283 



Thionin - Orange G for infected plant tissues, for chromo- 

 somes, etc. . . . . . . . . . . . . 283 



Titan Yellow^ for detection of magnesium in cells . . 284 



Trypan Blue, a nuclear stain for plant material . . . . 285 



SECTION 4— CYTOLOGICAL METHODS 



Acid Fuchsin - Toluidine Blue - Aurantia for mito- 

 chondria . . . . . . . . . . . . . . 289 



Acid Fuchsin - Picroindigo Carmine, for plant tissues as a 



cytological stain for root tips. . . . . . . . . 290 



Alizarin Red, S (Benda's method) for mitochondria, etc. 291 



Aniline Fuchsin - Iodine Green for mitochondria . . 292 



XX 



