Cato,[1] a man of consummate authority in all practical matters, expresses himself in relation to timber to the following effect:—"For making presses, employ the wood of the sappinus in preference. When you root up the elm, the pine, the nut- tree, or, indeed, any other kind of tree, mind and do so when the moon is on the wane, after midday, and when there is no south wind blowing. The proper time for cutting a tree is when the seed[2] is ripe, but be careful not to draw it away or plane it while the dew is falling." He then proceeds to say[3] —" Never touch the timber, except when the moon is on the change, or else at the end of the second quarter: at those periods you may either root up the tree, or fell it as it stands. The next seven days after the full moon are the best of all for grubbing up a tree. Be particularly careful, too, not to rough- hew timber, or, indeed, to cut or touch it, unless it is perfectly dry; and by no means while it is covered with frost or dew."

The Emperor Tiberius used also to observe the changes of the moon for cutting his hair.[4] M. Varro[5] has recommended that the hair should be cut at full moon only, if we would avoid baldness.