174 GENERAL INDEX TO ROYAL AGRICULTURAL JOURNAL. 



of light (Forbes), 420; Hitter and 

 JBcraid on the chemical power of solar 

 radiations, 421 ; Becquerel and Mascr 

 on tiie theory of light, 422 ; chemical 

 effects of light on chlorine (Gay-Lussac 

 and Draper), 423; ditto (G. Wilson), 

 424 ; carbonic ucid in soil (Boussin- 

 ganlt), 434 ; salt a solvent, 443 ; iron in 

 rocks oxidised (]MacCulloeli), 447. 



Soils, absorptive properties of (Jamicson), 

 xvii. 447 ; pores of (Misterlich), Hi. • 

 humus ami platinum black, 448 ; table 

 of absorptive earths (Schubler), 449; 

 absorption of moisture (Leslie), 4.'J0 ; 

 ammonia, see "Ammonia;" soils acted 

 on by organic acids, 454 ; soils of Great 

 Britain, 45.1 ; drift, tlie northern or 

 glacial, ib. ; soils of Cornwall, Devon, 

 and Somerset (Do la Bechc), 450 ; silica, 

 457, 458 ; silicates dissolved by carbonic 

 acid, 4G0 ; ditto by carbonate of ammonia, 

 461 ; mica in jMxir soils, 463 ; ditto in 

 Cornish clays, t'V ; magnesia, see " Mag- 

 nesia;" iron pyrites (hisulpliurct), 464; 

 Cornish rocks and soils (Do la Beche), 

 467 ; green eartli, olivine, glauconite, 

 and epidote, 468 ; carbonate of lime, 

 469 ; oxides of iron, 470. 



, absorptive ix)wer of, for drainings 



of dung-lieai>3 (Voelcker), xviii. 13i); 

 experiments witli compound drainings 

 of soils of known composition, 140 ; 

 quantity of aunnonia retained, 141 ; 

 phosphates absorbed, 145. 



, tlieir absorbing powers depend on 



peculiar combinations of alumhia, xviii. 

 148. 



, {wrous, absorbing powers of (Dr. 



Voelcker), xviii. 146. 



, tile matter takim up from, by water 



(Dr. Voelcker), xviii. 145 ; experiments 

 witli pure water, 146. 



, loam}', analysis of (Dr. Voelcker), 



xix. 546. 



, sandy, analysis of (Dr. Voelcker), 



xix. 542. 



, temperature of, at Hinxworth (J. 



B. Denton), xx. 277. 



, the staple, on deepening (Love), 



xvii. 543 ; deep ploughing only suited 

 to roots and oats, ib. ; benefit of a half- 

 turned fmrow, 544; ditto, a rough 

 surface, 545 ; sirring ploughing go- 

 verned by t'lie season, ib. ; soils suited 

 to deep cultivation, ib. ; crops, ditto, 

 547 ; white mustard ploughed in for 

 wheat, 546 ; subsoiling after drainage 

 should not be iunnediate, 548 ; its ex- 

 pense, 549 ; cost of horse-keep, ib. ; 

 digging or forking combined with 

 plougldng, ib. ; wheat experiments, 



plougliing at difterent depths, 550-52 ; 

 subsoiling clays injurious, 551 ; Smith's 

 (of Deanstone) and Gray's (of Ud- 

 dingston) subsoil-ploughs, 552 ; effects 

 of varied plougiiings, 553, 556 ; cheap 

 digging in Kent, 555; experiments 

 with wheat, oats, and layer, 557 ; benefit 

 of deep ploughing and liurning subsoil, 

 559 ; treatment of peat subsoil, 560 ; 

 P. Love's equalising swingle-trees, 562. 



Soils, Prussian, analysis, of (Liebig), xvii. 

 285 ; the results criticised (Lawes and 

 Gilbert \ 595. 



of Rothamstcd and Lois Weedon 



analysed (Lawes and Gilbert), xvii. 

 603 ; their absorptive power for water 

 and ammonia, ib. ; fartiur experiments, 

 611; Lois Weertua soil lias moro 

 nitrogen and works better tlian that 

 of Kothamsted, 612; Lois Weedon a 

 wlieatsoil — part naturally so, the other 



'■ made by marling, xviii. 30. 



, the mechanical condition of, favour- 

 able for tho growth of seed, ti prize 

 essay (H. Tanner), xxi. 46; gennina- 

 tion of seeds, 47 ; diastaste, ib. ; stag- 

 nant water injurious, 48 ; the wheat 

 crop, effects of a fallow, 49 ; a fine sur- 

 face not desirable, 50 ; effect of elimato 

 on clay land, 51 ; sowing wet or dry, 

 53 ; time for sowing, 55 ; depth de- 

 sirable for germimition, ib. ; dibbling, 

 drilling, and sowing broadcast, 56 ; 

 burhij cultru'c, imjiortunce of a free- 

 working seed-bed, 57 ; should be sown 

 when land is dry, 58; influence of 

 seasons, 59 ; the oat, 60 ; it requires a 

 firm seed - bed, ib. ; suited to turf 

 ploughed down, ib. ; time and manner 

 of sowing, 61 ; peas, 62 ; beans, 63 ; 

 grass and clover seeds to be lightly 

 covtned, 64 ; table of depths most 

 favourable for vegetation, 65 ; turnips 

 and swedes, 67 ; time of sowing, 69 ; 

 mangold, ib. ; autumn preparation of 

 land, ib. ; spring ditto, ib. ; early sow- 

 ing, /6 ; band-dibhling, 70; carrotsand 

 parsnip.t, ib. ; mixing com with seed 

 gives a guide to the horsc-hoe, ib. ' 

 rape or cole, 71 ; s]iring feed, ib. • 

 French clover or trifolium, when sown' 

 72. 



, the chemical properties of (Dr. 



Voelcker), xxi. 105 ; sandy soils and 

 clays in relation to ammonia, 106 ; value 

 of soluljle fertilisers, ib. ; Liebig's 

 mineral theory, ib. ; researches by 

 Professor Way and the author, ib. ; 

 soils vary in fertility, 107; effects of 

 manure on difterent soils, ib. ; changes 

 effected in manure by soils, ib. ; use 



