xII 
Carbonic acid, solvent action of....128 
Carbonic oxide -. 92 
Chabasite............ccccceseeenaeee 115 
. action on saline com- 
*  pounds.............206+ 345 
sf formed in Roman mason- 
Chalk soils... 
Charcoal, absorbs | gases pein 
defecating action of. 
Chili saltpeter....... Smemign MRSS 253 
Chiorite. sscosecs i cteseces geiewee 113 
Chrysolite... 
“ absorptive powers 
** effect of, on urine. 
Clay-slate.......... 66. 
Coffee, condenses gases... 
Color of soil............ 
Conglomerates 3 
Crenates............ «231. 
Crenic acid... ...,...... 227, 229 
Decay........... 289 
Deliquescence 163 
Deserts ..... 197 
DOW iiaa vorvawenx 
Diffusion of gases. --100 
Diorite ............ 120 
Doletitesssccimaxacseianwas vevasese 120 
Dolomite........ 
Dye stuffs, fixing of.. 
Earth-closet..... 
Eremacansis..........0. cece eeeeee 
Evaporation, produces cold 
se amount of, from soj].197 
Exhalation............0eeeeeee 
Exposure of soil. 
Feldspar............++- 
“growth of barley in 
Fermentation........... ... 
Fixtation of bases in the soil . 3 
Frost, effects of, on rocks..... .... 
ao oe * on soils... 
Fumic acid.. 
Gases, absorbed by the plant eeueeat 
“ **. porous bodies..167 
ita ob itt soils. 
We diffusion of, 
te osmose Of.,............00ee 
Glaclersice. vsenecesin scenes scaues 
HOW CROPS FEED, 
Glycine.....ccccsnecsecereseeceenes 296 
Glycocoll .... spnaewa vanwsaie 296 
Gneiss... .. =e soe 119 
Granite.. 118, 120 
Gravel... ...cccccecnccercarcenssene 152 
“warmth of.. 195 
Guanin,........6eee 296 
GYPSUM. ...... cece es eeseneeeseceos 115 
‘* does not directly absorb. 
water......cce cee ceeee -162 
“fixes ammonia 
Hardpan. ... ... 
Heat, absorption and ‘Tadiation of... 
“ developed in flowering....... 
£6 Of BOLL sie siciecin wana 
Hippuric acid 
Hornblende...... oie 
Hydration of minerals. 
Hydraulic cement....... .... ....- 
Hydrochloric acid gas......... 
Hydrogen, supply of, to plants..... 
se in decay............. 291 
Hydrous silicates, formation of... .352 
Hygroscopic quality..........60.+- 
Humates....... 
Humic acid... 
‘\ absorbent power for water..162 
** absorbs salts from solutions.172 
‘* action on minerals.......... 188 
“chemical nature of. 
‘does it feed the plant?. wa sass 232 
“not essential to cropa........ 238 
se value of....... senrigaes ee dees 182 
Jodine in sea-water 
Isomorphism 
Kreatin 
MOT (Sos cires desks Giscinte eisai vests 372 
MBUUNG ius v une adsoihdoavesinenes 113 
Lime, effects of... 
Limestone. . 
Loam... 154 
Lysimeter ..314 
Magnesite, sci ciciinas, seasecncaree 115 
Marble! nqvawe iatecsajadiesie secrsies's 121 
DEANE a vandagewaieansat > omigerweeia 155 
Marell 288 ios) cues dcccwadecrieces 91, 99 
Micaroises sacar sean ery Ba sicict ekSys 109 
