XLV. Of the conditions of plant growth
XLVI. Of the mechanical action of plants
XLVII. Of the protection of nurseries and meadows
XLVIII. Of the structure of a wheat plant

XLIX. _4° Harvest time_:
Of the hay harvest

L. Of the wheat harvest
LI. The threshing floor
LII. Threshing and winnowing
LIII. Gleaning
LIV. Of the vintage
LV. Of the olive harvest

_5° Housing time_:
LVI. Of storing hay
LVII. Of storing grain
LVIII. Of storing legumes
LIX. Of storing pome fruits
LX. Of storing olives
LXI. Of storing amurca

LXII. _6° Consuming time_:
LXIII. Of cleaning grain
LXIV. Of condensing amurca
LXV. Of racking wine
LXVL. Of preserved olives
LXVIL. Of nuts, dates and figs
LXVIII. Of stored fruits