XVI 



HOW CROPS GROW. 



Stomata 285 



Stool 265 



Straw, ash-analyses 152, 153, 357 



" prox. " .386 



Structure of plant 220 



Suckers 206 



Sugar-beet, ash-analyses 154, 156, 158 



" " detailed analyses 389 



ir, estimation of. 76 



in cereals 77 



" sap 338 



of milk 78 



Trommer's test for 75 



Sulphate of lime 133 



" potash 132 



" soda 132 



Sul] hates 43, 117, 132 



Function of. 1% 



in clover 1!)4 



" reduced by plant 100 



Sulphides 42 



Sulphide of potassium 115 



Sulphites 115 



Sulphocyanide of allyle 114 



Sulphur 42, 114 



" in oats 194 



Sulphureted hydrogen 43, 115 



Sulphurets 42 



Sulphuric acid 42, 116 



" in oat 219 



Sulphurous acid 42, 115 



Sulphydric acid 43, 115 



Supercarbonate of soda 131 



Superphosphate of lime 135 



Symbols, Chemical 47 



Tabashir 183 



Tannin 77, 110 



Tao-foo 101 



Tapioca 64 



Tap-roots 237 



Tartaric acid 88, 89 



Tartrates 136 



Tassels of maize 294 



Teak, Phosphate of lime in 191 



Tension in plant 372 



Tests for albuminoids 96 



Textile plants, Ash of 378 



Theobromin Ill 



TMavii, var. calaminaris 196 



Tillering 205 



Titanic acid 123, 195 



Titanium 123 



Tobacco, ash-analyses 378 



Silica in 185 



Touch-paper 136 



Tradescantia zebrina, Air-roots of. .257 

 Transformations of cell-contents. ..229 

 Tran si ocation of substances in. 



plant 218 



Transplanting 255 



Tricalcicphosphate 134, 135 



Tubers 266 



Turnip, ash-analyses 155, 156, 377 



" prox. " 387 



Tuscan hat-wheat 144 



Ultimate Composition of Vegetable 



Matters 15 



Umbelliferous! plants 207 



Unripe seed, Plants from ........... 300 



Variation of ash-ingredients, limit- 

 ed ........................ 147, 148 



Varieties ........................... 297 



" Causes of ............... . 144 



Vascular bundle of maize stalk ..... 270 



Vascular-Tissue .................... 233 



Vegetable acids . .................. 85 



" albumin .................. 97 



" casein ................... 100 



" cell ..................... 222 



" fibrin .................... 91) 



" ivory .................... 226 



" mucilage ................. 71 



" parchment .............. 58 



" tissue ................ 22o. XX 



Vegetative organs .............. 222, 234 



Veins of the leaf .................. . 2N5 



Vine, Bleeding of .................. 332 



Viola calaminaris. ... ............... 196 



Vitality of roots .................. 260 



" seeds .................... 305 



Vital Principle ..................... 221 



Water, Composition of. ....... ...... 53 



Estimation of ............. .. 55 



Formation of ............... 41 



imbibed by roots ........... 248 



" " seeds ............ 360 



in air-dry plants ............. 55 



" fresh plants ............... 54 



of plant affected by soil ..... 369 



" vegetation, Free .......... 55 



" Hygroscopic.. 55 

 Water-bath ....................... 54 



Water-culture ...................... 167 



Water-glass ........................ 120 



Water Roots ................. 252, 253 



Wax ............................ 89, 90 



" in oat-plant .................. 211 



Well-water, used in water-culture, 

 Composition of ................ 171 



Wheat, ash-analyses ...... 150, 152, 379 



" prox. ' ................ 387 



" " " detailed ........ 388 



ultimate analyses ......... 45 



gum ........................ 99 



straw, proximate analysis.. .386 

 " ultimate ' ... 45 



roots of ................. 246, 247 



White of egg ...................... 96 



Wiegmann & Polstroff, Exp. with 



146 

 334 



cress 

 Wiltin 



Wolff, Exp. with buckwheat 164 



Wood 



Amount of water in 



Ash of. . . 



57 



', 



79 



cells 2TI 



" of conifers 279 



paper 57 



We ody-libcr 60 



stems 282 



tissue 2:5:} 



Yeast 223, 231 



Zamia spiralis, Root of. 252 



Zanthopnyll no 



Zinc 129, 131 



