The Natural History of Pliny, Volume 3 (of 6)

Chapter 444: CHAP. 41.—REMARKABLE FACTS CONNECTED WITH IRRIGATION.

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The work assembles systematic observations on animals, insects, and trees, combining natural history with practical notes. It surveys insect forms and habits, including bees, silk‑producing worms, spiders, and parasitic species, and discusses reproduction, classification, diseases, and useful products like honey and silk. It then examines animal anatomy in detail, limb by limb and organ by organ, comparing organs, vital functions, and bodily peculiarities across species. Later sections catalogue trees and exotic plants, describing aromatic gums, spices, frankincense, myrrh, and methods for producing and testing unguents and perfumes, and noting their uses and regions of origin.

CHAP. 41.—REMARKABLE FACTS CONNECTED WITH IRRIGATION.

In the Fabian district, which belongs to the territory of Sulmo 3233 in Italy, where they are in the habit, also, of irrigating the fields, the natural harshness of the wines makes it necessary to water the vineyards; it is a very singular thing, too, that the water there kills all the weeds, while at the same time it nourishes the corn, thus acting in place of the weeding-hook. In the same district, too, at the winter solstice, and more particularly when the snow is on the ground or frosts prevail, they irrigate the land, a process which they call “warming” the soil. This peculiarity, however, exists in the water of one river 3234 only, the cold of which in summer is almost insupportable.