Texture of soils, 37, 143, 150.

Thinning fruit, 137.

Thistle, 6.

Thistle family, 86.

Thomas slag, 198.
as fertilizer, 198.
phosphoric acid in, 198.

Tillage and plant food, 67.
and fertility, 150.

Time to begin this study, 3.

Time to plow, 98.

Tobacco soils, 27.

Tomato soils, 161.

Tools, 5.
and the farmer, 5.

Transpiration, the fact, 110.
amount of, 111.