cowpeas as, 186.
legumes as, 186.
non-leguminous, 191.
soy-bean as, 189.
time for growing, 186.

Gum in plants, 64, 66.

Gypsum, 201.


Habit of growth of roots, 11.

Handles of plow, 93.

Harrowing, 101, 158.
objects of, 101.
time for, 101.

Harrows, 4, 102.
brush, 102, 105.
chain, 102, 105.
coulter-toothed, 102, 104.
plank, 102, 105.
rolling cutter, 102, 103.
spike-toothed, 102, 104.
spring-toothed, 102, 103.

Hay soils, 29, 30.