121. 



6) P ii texture 



i^i Arrangement of soil lasers 

 b) "Equalization 

 i. texture 



7) Underground seepage thai comes near surface ~.t foot of 

 slopes, etc. 



now return to 'r. 



J) Chemistry ' iil.{aa mi 



?j. l.T^ovtanCG of &ft&tt.0j it food in ;>oii. 



f l-itoj-est to UFJ iy t ..oant of plant food in the 



soil, ho 1 ? lonr it --ill last, --nd how beat to replace i, i>o not favor 

 the extreme notion that the physic idition of the soil io more imp- 



ortant th chariic--.! condition. 



Forest t /it foods, less of chemical materi- 



als, PJTK ri eh to th .1. But they are grateful for sup- 



plies, nnd r : ly to vils. - r or nur series we always want 



good Roil. 



2>. Poret vs. other crops with respect to chemical needs. 



re the test growth of timber and vegetables. 



Fertile 1-nd is noceonary for profit. The soil replenishes chemical 

 ri' tfcrinl ; rat'ior clcv/ly. Hopkins in Illinois studied the problem as to 



ither :s v/oald last in i^e soil; he claims 



th-* the euppli i: 1; . .vioul ture is 



oils will, j ; up, but only if Uie farmers do 



thing by fchfj soil. Qiina hao gooa soil, and it ii^.s been kept 

 7 400 ra of silling (Illng of "is.}. 



! lean of pineries evon wie fo ,r must Iiandle the soil care- 



fully to let; op it in ^ood contition. 3ut generally he need not bother 



out t} 



ondi tl . aoile 



Tnble 



gures 



.d be 

 checked up. 



C;, the riL-ovc soila with e^.oli other. Lime takes the control- 



ling position clje.'fiically; clay, humus, *.nd iron salts are important 

 phycicallj. i th tiieae four present tho noil cantdo r.7ith n comparatively 

 smnll t of j 1. 



