678 INDEX 



Sand, determination 6 37 



estimation in ash 610, 613, 618 



Schmitt, nitric acid method 443 



Schonit 500, 50 1 



Sea weeds 289 



value as fertilizer 290 



Shaler, origin of phosphates 31 



Sievert, nitric acid method 440 



Silica and fluorin, loss in analysts 227 



estimation in ash 610, 613, 618 



influence on phosphoric acid determination 60 



insolubility 6^ 



Silicic acid, separation in the estimation of phosphoric acid 211 



Silver method for phosphoric acid 177 



volumetric 178 



Slag phosphates, determination of phosphoric acid 67 



Soaps 640 



analysis 640, 641 



determination of total alkali 641 



Soda and potash, analysis of caustic 641-643 



caustic 641 



lime, hydrogen method 341 



process 338-342 



coloration of product 342 



general considerations 343 



official French method 341 



official method 339, 340 



Ruffle method 343 



saltpeter 293 



Sodium acetate solution 138 



amalgam, preparation 442 



chlorid, estimation 556 



nitrate functions 297 



dissociation 298 



Soils, impregnated with nitrogen 29^ 



Solids, sampling 8 



Solubility, test for adulteration of basic slag 223 



Specific gravity, test for adulteration of slags 224 



Stall manure 594 



effect on texture of soil 604, 605 



properties and uses 64 



Stassf urt, deposits 488 



potash deposits 486, 488 



Stirrer, Huston's mechanical 118 



Stoklasa, determination of nitric acid 439 



Subterranean insects 648 



Sucking insect, external 640 



Sulfanilic acid method 468 



Sulfids, occurrence in basic slags 222 



Sulfur in plants, determination 620 



Sulfuric acid, determination 260, 557, 620 



estimation in ash 614 



quantity required in superphosphate manufacture 280, 28:, 282 



removal in perchloric acid method 588 



