Carbonic acid in soil, 37.

Carrots, 4, 6.

Cauliflower soil, 28.

Celery, 4.

Cellulose in plants, 63, 66.

Chain harrow, 102, 105.

Chemical properties of a fertile soil, 147.

Cherry flower, 129, 130.

Chlorophyl in leaves, 113.

Classification of soils, 26.

Clay, 27, 38.
and lime, 42.
loams, 29.
power to absorb water, 41, 42.
relation to water, 25, 41, 43.
soils, 29.
soils injured by working when wet, 45.
to improve texture of, 42.
water-holding power, 44.