CONTENTS 
PAGE 
The soil used ........ 05 COG CO CRG Greer 8 eee le ch i Rg 51 
Wrolumenmweren Grier cotracs crosses cere sie scree ai elena es cuate weiuel aides als gacee bluse 52 
Mechanical composition.............. ar BBV TERED i SABRE He HORS EROS oe 52 
Chemical GanniestiOnvceGen amen acne os coe Ocoee Oe once Ore en ee 53 
MiamunevanuprentilizenswUsed! 0%)... 215s ie kee eh yee ere nue Geo hoe a egal oa els ceca 54 
Methods for chemical and mechanical analyses................0.0 000 cece ese eee 54 
Poltreatment and cropping. system. -.. 22.50... .:- 62s ete cect eee eee bes ene eee 54 
Quantity and rate of percolation........... ss Sco Sect ery La cet tae a es Ce are Ge 56 
Percentage percolation of rainfall............. A tees irene syvraa pene na ee Maree cee eae eee 56 
ikec tor liming on percolation: : 22. dessa 86-4 os hee ees es tele detec scuuemes 57 
MF IDEERUUTITZ a GlONMDVRCEOPShes i Men. lls Wiseicsp nie s.feaie dele Gs csg e wiareule gaclsdale Que wieces 58 
| EA ADORtLAMS PIAL OMILAL Onan he teusrayt os eok biel ave sade vain Ane othe Ges Bde wlbwelels oles 58 
| MiOIShUEe Re ations Ole ChODS= i pst vce io sce) Aen ole ele awe tone 60: 
Removal of nitrogen from the soil in drainage water and in crops.................... 61 
| Effect of liming on removal of nitrogen in crops.......................-0-0-0-. 61 
Effect of liming on removal of nitrogen in drainage water....................... 2 
Effect of liming on removal of nitrogen in both drainage water and crops......... 62 
Relation of different crops to formation of nitrates....................0.0.0 20.0000. 63 
REIT OWA IMO LEC ALG TUTTE Mie reer er cena gn wR bee eta ent a a Sst cctee cyl las) Aumnieceealet44 soe ios 64 
Effect of plant growth on removal of calcium................0000 00 ec eee eee 64 
Biectroflimmexonremoval of caletum....... 2.25.2 -6-2+-+00ses sees ess esse sse 66 
Liming to maintain the calcium Content etek sree ee gscos ere en ay waa eae 67 
ReMONAMOisMACNeSIUMM Er sles plana Nanda cvakl iene sa ulalitcrs oleh cee lehersls 68 
Effect of plant growth on removal of magnesium.....................000-0e00e 68 
Effect of liming on removal of magnesium.................... 0c c eee ee cee eee 69 
SPE In OWA MOBO LASSIUMIP Ne oe cares a tie clone Seb se tae wel cue Se dwt e dacdies cae § 69 
| Effect of plant growth on removal of potassium................ 2000.00 c eee eens 70 
) Effect of liming on removal of potassium... . 1.0.2.0... 0... c cece eee 71 
Hern o 2 molas liter ier whe icles eas: ald aretelle, Goeibiv wait Sea ao tice s Soniyw a tvg ate war aiive. cin gels 72 
Effect of plant growth on removal of sulfur.............0 0.0.00. 0 cece eee eee 2, 
Effect of liming on removal of sulfur...........0..0... 00.0 cee ce cece eee eens 73 
PEern OV ARO MphOsphonustemaiana ne ne Nee whe G ancdhe os Tike shel bh Be adios une ote wane ees 73 
maaermeniseitectsoilimineg the two soils... 2 s.<. 5c sleek ono d eee wees ee ewes 74 
| DEDEDE 0.0 6 6 0 0 8 016 6 Hid 5 OH UES rE ECE GRESSION 76 
ee ecncix (Comnbarminewtalloles) Pyne ener eo ce wee th UE IL Galena Sails oie m wcae atest <s 78 
Tabular statement of crop yields from tanks 13 and 15, by years................. 78 
Tabular statement of flow of drainage water from tanks 13 to 16, by months...... 78 
Tabular statement of flow of drainage water by years.................-....2--. 80 
Tabular statement of meteorological records at Ithaca from May 1, 1913, to April 30, 
QMS 5 og 0s 6:6 0 FOES Si OR CL ee Ete rie oe ee eee en Ee ee eae 
Tabular statement of substances contained in drainage water, in parts per million.. 83 
Tabular statement of substances contained in drainage water, in pounds per acre.. 87 
Tabular statement of ash and ash constituents in crops, in percentage of dry matter 92 
Tabular statement of ash and ash constituents in crops, in pounds per acre........ 93 
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