356 PRINCIPLES OF BIOLOGICAL MICROTECHNIQUE 



side-groups of protein chain, 44 



silk-fibroin, 58 



silver salts, reduction of, 305 



Singer, 196, 200 



single-bath method, 208 



Sjobring, 83 



Sjovall, 81 



Small, ix 



Smith, J. E., 287 



Smith, J. L., 107, 129, 130, 301 



Smith, J. M. D., 214 



sodium chloride, 53, 54, 81, 119, 



143 

 hydrosulphite, 162 



iodate, 173 



phenolate, 212 



sulphate, 33, 81, 127, 143 



sulphoxylate, 286 



thiosulphate, 104 



solutions, percentage composition 



of, 313 

 specificity of vital dyes, 289 

 spectrophotometer, 160, 253 

 spelling, notes on, 329 

 spermatocytes of Helix aspersa, 77, 



78, 281 

 spermatozoa of fishes, dyeing of, 



192, 205 

 of Ascaris, dyeing of, 225 

 spermatozooids of Characeae, 280 

 sphingomyelin, 94, 135 

 Spirogyra, 66 

 Spokes, ix 

 'staining', 296 

 staminal hairs, 280 

 starch, dyeing of, 247 

 Starke, 123, 125 

 stearic acid, 94, 121 

 Strangeways, 28, 70, 92, 108 

 Strasburger, 106 

 strychnine, 259 

 substantive dyes, 208 

 Sudan black, 122, 300 

 Sudan III, loi, 299 

 Sudan IV, loi, 299, 300 

 sulphuric esters, 246 

 sulphydryl, 49, 52 

 sulphatase, 113 

 sulphonate, 167 



sulphonic acid, 167 



sulphuric acid, 143, 146 



sulphurous acid, 109 



supervital dyeing, 279, 329 



'supravital', 330 



Susa, 140, 147, 148 



swelling caused by fixation, 36, 64, 



75 

 Sylven, 245, 247, 256, 257, 258 



Tachardia lacca, 207 



tadpoles, 278 



Taenzer, 233 



tannic acid, 120, 223 



tanning of leather, 57, 126 



Tellyesnickzy, 72, 92, 94, 97, 108, 



123, 136, 150 

 temperature, eflfect on dyeing, 201 

 effect on metachromatic dyes, 



254 

 testis of mouse as test-object for 



fixatives, 72 

 tests of fixatives, 28, 71, 72 

 tetra-azotized benzidine, 307 

 tetrachrome dye, 270 

 tetrazolium, 293 

 textile dyeing, 188 

 thiazine dyes, 171, 180 

 thionine, 248, 268, 282, 287, 288, 



290 

 Thorpe, 91, 118, 130 

 toluene, 121 

 toluidine blue, 171, 180, 194, 243, 



248, 250, 258, 270, 282, 290 

 Tradescantia, 280 

 transmission of light by dyes, 



160 

 trapping agents, 224 

 Trembley, 274 

 ^Triacid' dye, 264 

 triarylmethane dyes, 163, 169, 170, 



171, 225 

 trichloracetic acid, 24, 32, 83, 138, 



143, 146, 204, 217 

 triglycerides, 114 

 Trimen, 172 

 trinitrophenol, 185 

 triolein, 94, 130 

 Trioxyhaematein, 174, 216 



