LOSSES OF MOISTURE AND PLANT FOOD BY PERCOLATIOX. 11 



October 15, 19131 gm. sulphate of potash No. 4563. 



Manure additions to pots 5, 11, 17, 23, 29, 36, 41, worked in to the 

 depth of 3 inches. 



October 15, 191030 grams excrement No. 3223. 



October 15, 1911 30 grams excrement No. 4561. 



October 15, 1912 30 grams excrement No. 3258. 



October 15, 1913 30 grams excrement No. 3258. 



Manure additions to pots 6, 12, 18, 24, 30, 36, 42, 48. 



March 15, 1911 30 grams excrement No. 3223. 



March 15, 1912 30 grams excrement No. 3258. 



March 15, 191330 grams excrement No. 3258. 



Nitrate additions: 



March 15 and November 15, 1912 Added 1 gm. nitrate of soda No. 

 13967 to 2, 8, 14, 20; added 2 gm. to 26, 32, 38, 44. 



DESCRIPTION OF SOILS. 



The soils and subsoils used are described as follows : : 



2377 Norfolk sand; gray sandy soil, surface; Jacksonville; culti- 

 vated 15 years; has been idle 6 years. 



2378 Orangeburg fine sandy loam; red sandy soil; surface; on C. 

 D. Jarrett's farm near Dialville; cultivated since 1855. 



3333 Houston loam, 0-10"; J. N. Worthy's farm, 4 miles from 

 Waco: good upland, rolling prairie; produces 25 to 30 bushels corn 

 and I to 3 bales cotton per acre; light brown sandy soil; suffers from 

 drought : known as mesquite and post oak land ; cotton and corn are the 

 principal crops: cultivated since 1882; no fertilizer used; no green 

 crops plowed under, and no manure used. 



3334 Subsoil to 3333, 10-22" ; dark brown loam. 



3335 Houston black clay, 0-12"; black clay; sticky when wet; Mrs. 

 Ellis Blake, Waco; known as "black waxy land"; very good soil; pro- 

 duces -J bale cotton and 35 bushels corn; cotton and corn chiefly grown; 

 no fertilizer used; soil packs, dries into clods; does not wash, and dirt 

 does not wash onto it ; cultivated 30 to 40 years ; no green crops or 

 manure ever plowed under. 



3336 Subsoil to 3335, 12-24" ; black clay. 



3341 Yazoo clay, 0-12"; 6 miles east of Waco; farm of Dr. Sander- 

 son; black clay; fertile bottom land, subject to overflow; produces -J 

 bale cotton, 40 to 50 bushels oats, 45 bushels corn; cotton, corn and 

 oats chiefly grown : no fertilizer used ; sticky in wet seasons ; works well 

 in dry; does not pack or crack; crumbles on drying; does not wash; 

 cultivated 50 } 7 ears; no green crops or manure plowed under. 



3342 Subsoil to 3341, 12-24". 



3337 Miller fine sandy loam, 0-12": Mrs. Ellis Blake, Waco; light 

 brown sandy soil ; behaves well in wet and dry seasons ; good soil ; level ; 

 produces 30 to 35 bushels corn and 4- to 1 bale cotton; cotton, corn, 

 fruit and vegetables are grown ; no fertilizer used ; soil crumbles and 

 does not pack, crack or wash; nor does dirt wash onto it; cultivated 30 

 to 40 years; no green crops or manure plowed under. 



3338 Subsoil to 3337, 12-24" ; yellow clay. 



3343 Crawford clay, depth 0-7"; 6 miles 'east of Waco; farm of Dr. 

 Sanderson; rolling, dark brown clay; poor yields except in wet seasons; 



