Virgil thought the odour exhaled by the Juniper tree noxious, and he speaks of the Juniperis gravis umbra:—
"Surgamus! solet esse gravis cantantibus umbra;
Juniperis gravis umbra; nocent et frugibus umbrae."
Eclog. X. v. 75.
But it is more scientific to suppose that the growth of Juniper trees should be encouraged near dwellings, because of the balsamic and antiseptic odours which they constantly exhale. The smoke of the leaves and wood was formerly believed to drive away "all infection and corruption of the aire which bringeth the plague, and such like contagious diseases."
Sprays of Juniper are frequently strewn over floors of apartments, so as to give out when trodden down, their agreeable odour which is supposed to promote [295] sleep. Queen Elizabeth's bedchamber was sweetened with their fumes. In the French hospitals it is customary to burn Juniper berries with Rosemary for correcting vitiated air, and to prevent infection.
On the Continent the Juniper is regarded with much veneration, because it is thought to have saved the life of the Madonna, and of the infant Jesus, whom she hid under a Juniper bush when flying into Egypt from the assassins of Herod.
Virgil alludes to the Juniper as Cedar:—
"Disce et odoratam stabulis accendere cedrum."
Georgic.
"But learn to burn within your sheltering rooms
Sweet Juniper."
Its powerful odour is thought to defeat the keen scent of the hound; and a hunted hare when put to extremities will seek a safe retreat under cover of its branches. Elijah was sheltered from the persecutions of King Ahab by the Juniper tree; since which time it has been always regarded as an asylum, and a symbol of succour.
From the wood of the Juniperus oxycoedrus; an empyreumatic oil resembling liquid pitch, is obtained by dry distillation, this being named officinally, Huile de cade, or Oleum cadinum, otherwise "Juniper tar." It is found to be most useful as an external stimulant for curing psoriasis and chronic eczema of the skin. A recognised ointment is made with this and yellow wax, Unguentum olei cadini.