[Sidenote: Diana a goddess of the woodlands.] Diana was essentially a goddess of the woodlands, as Ceres was a goddess of the corn and Bacchus a god of the vine.[411] Her sanctuaries were commonly in groves, indeed every grove was sacred to her,[412] and she is often associated with the forest god Silvanus in dedications.[413] We must not [Sidenote: Sanctity of holy groves in antiquity.] forget that to the ancients the sanctity of a holy grove was very real and might not be violated with impunity. For example, in Attica there was a sanctuary of Erithasean Apollo, and it was enacted by law that any person caught in the act of cutting trees in it, or carrying away timber, firewood, or fallen leaves, should be punished with fifty stripes, if he was a slave, or with a fine of fifty drachms, if he was a freeman. The culprit was denounced by the priest to the king, that is, to the sacred official or minister of state who bore the royal title.[414] Similarly it was the duty of the sacred men at Andania, in Messenia, to scourge slaves and fine freemen who cut wood in the grove of the Great Goddesses.[415] In Crete it was forbidden, under pain of curses and fines, to fell timber, sow corn, and herd or fold flocks within the precinct of Dictaean Zeus.[416] In Italy like customs prevailed. Near Spoletium there was a sacred grove from which nothing might be taken, and in which no wood might be cut except just so much as was needed for the annual sacrifice. Any person who knowingly violated the sanctity of the grove had to expiate his offence by sacrificing an ox to Jupiter, and to pay besides a fine of three hundred pence.[417] In his treatise on farming Cato directs that before thinning a grove the Roman husbandman should offer a pig as an expiatory sacrifice to the god or goddess of the place, and should entreat his or her favour for himself, his children, and his household.[418] The _Fratres Arvales_ or Brethren of the Tilled Fields were a Roman college of twelve priests, who performed public religious rites for the purpose of making the crops to grow, and they wore wreaths of ears of corn as a badge of their office.[419] Their sacrifices were offered in the grove of the goddess Dia, situated five miles down the Tiber from Rome. So hallowed was this grove, which is known to have included laurels and holly-oaks, that expiatory sacrifices of sows and lambs had to be offered when a rotten bough fell to the ground, or when an old tree was laid low by a storm or dragged down by a load of snow on its branches. And still more elaborate expiation had to be made with the slaughter of sows, sheep, and bulls when any of the sacred trees were struck by lightning and it was necessary to dig them up by the roots, split them, burn them, and plant others in their room.[420] At the annual festival of the Parilia, which was intended to ensure the welfare of the flocks and herds, Roman shepherds prayed to be forgiven if they had entered a hallowed grove, or sat down under a sacred tree, or lopped a holy bough in order to feed a sick sheep on the leaves.[421]