XII 
Carbonic acid, solvent action of... .128 
Carbone OSGeo. cies. sews sess teh 92 
RRM ALGEA Lotte Clary tiedine ane ye OS Gels 115 
aE action on saline com- 
MOUNGS. so.cees canes 345 
iz formed in Roman mason- 
CLAD ESEICT Re Se A Sees anaes eee 192 
Charcoal, absorbs gase8....... ...-. 165 
ae defecating action of...... 174 
MOTI ERITPCLET. oc. casweeiee ee cacoeee 253 
MSINGFILG. ahscswsinc ha sees seme 113 
CHUVBOUMUC 22 cco ccs 0 Saco eee eee 114 
lays <4 pk te a eae tect gota 132, 134, 154 
*-“ADSOYPtLVE PO WET asriewe ieee beers 174 
Swetrect Of.;ON Uline... csi 293 
Glay-slate <2: cdkey as Shesee cere 119 
Coffee, condenses gases........ --- 168 
Coloriof Soils eee ae eee “.190 
Cone lomerates. > i. 4 ince teereree 121 
CTENATCE.-03 hac. Jc Seah Poe eee acne 231 
Grenic ACIO .27a)s.. ceteris 227, 229 
WIG CAY eee cor cae als «slain cite eres ace 289 
WelMWesCeNGe s,s. er Satine rel ree 163 
MeSOrts: > acc oo ucierecte Fee ee 197% 
Mews eect aa oes eee 189, 195 
Diffusion of gases. .o6 jas. ease 100 
WIOVITC AS. ais oo ot cits eee eee 120 
D010) erences MeeOn hoes ose 120 
NOlOMILE!< hse Soseen ssc es 115, 121 
DCBINTNO'.-< o.concpete css saste eee 185 
Drain water, composition Ol aan 312 
DTLb. eo. 36. jee = & Ses ze aoe Ree ees 144 
Dye struts, fixin Oba ./. cope terres 174 
Marth-eloset:.......ct.asicas ences 171 
HIFCMACAUSIE): «...4-eesebes tt ary.2) 
Evaporation, produces cold........ 188 
ee amount of, from soil.197 
Mis AARON: joe eae aig neta 202, 206 
Mxposute Of SO) 3.2.2) e as. «eae 195 
MOIS ATs oh ctar.c4 Stans tia Sues eee 108 
«growth of barley in.... ..160 
MOanMeNtAT OM) oa,sc 40's le meets Uda eats 290 
Fixtation of bases in the soil ...... 339 
Frost, effects of, on rocks..... .... 124 
= « SEAGH SOUST Occ 184, 185 
MAROC el, ain ities sive asics weet 258 
A808, absorbed by the plant....... 103 
4 ‘* porous bodies. .167 
“y ae ere SODASs opaie eee 165, 166 
is UM MSION, Ofor ea sicitceistertaie 100 
ee ORINORE VOL. ok, ort Lene: 102 
ETIACIONS ; pic's cas easiows ues a ste ena 124 
HOW CROPS FEED, 
Glycine... .. 25 cbs5 as ceeidtec mites 296 
Glycocoll -..../7..shesesee eee 296 
Gneiss.s. .vdeeekeeeee rae ats 119 
Granite... ; sc.» sd0< ase Renee 118, 120 
Gravel. -.:.....4. é2trasee-aee ie eeerennaa 152 
“warmth /0f-.\.:. asses oan 195 
GUANIN...,.....0<'s0\vesls s/s 296 
Gypsum: 6.5532 28 nee 115 
‘** does not directly absorb 
water .....0%...0 125) pater 
“fixes smmibRiay... eee 244 
Hardpan.. ..xcescean sen eee ee 156 
Heat, absorption and radiation of.. 
188, 193 
‘* developed in flowering....... 24 
“Of SOil: 22. ae eae 187 
Hippuri¢ acid), s. 4205-0, someon 295, 277 
Hornblende.. (3.4 sae eee eee 112 
Hydration of minerals... ......... 127 
Hydraulic: cements. > ee) 2-5.) 122 
Hydrochloric acid gas.............. 93 
Hydrogen, supply of, to plants..... 95 
‘ in decay sc2 een see 291 
Hydrous silicates, formation of... .352 
Hygroscopic quality... grees) son 164 
Humates®, - (42 seagate eee aie 230 
Hunii¢ acid’ .2 ge asceee eee eee 226, 229 
Humin.. ° 33 oct eee 236, 229 
AumUs: 652232). eres eee 186, 224, 276 
‘© absorbent power for water. .162 
‘¢ absorbs salts from solutions.172 
‘action on mineralah=s eee 138 
“chemical matoure‘of >. 7 aeons 138 
‘* does it feed the plant?...... 232 
‘* not essential to crops........ 288 
"valle Olea noeeaterre Ceeee 182 
Jodine in sea=walenion mca. ares 322 
Isomorphism: 225 .nss ceteses oeeiiets i 
Kreatin |... 3.5)ccraeete sent eeeae 196 
Kaolinites- pare eke Oe 113, 132 
Latent heat. {oleae epee eee 188 
Lawes’ and Gilbert’s wheat experi- 
ments, :. . .\clisebespleet eisai ieraens 312 
Leucite \. . 0. “awe Mneilee eee Sees 113 
Lime; effectS'0f-. wc... tee 184, 185 
Limestone: ....cceesepeier teniee 121, 122 
Loam..." . boas mesg eae kcaate ty mmnES 154 
Lysimeter.;--2.¢22anch ee eer 314 
Maonesite. ........... L's ao atten 115 
Marble: o's: ss: Gkane ets ete nee 121 
Mar). . 5. .)s:. Sac ecipietelele tener 155 
Marsh gas... sien ese eee 91, 99 
Mica. .\...0.) % ss esetnsas a eee 109 
