Thuja Occidentalis, Arbor Vitae. The ec. tr. is alcoholic, but free from extractives and suitable for surgical use. Aqueous thuja contains the astringent but none of the oily and resinous principles. Long's thuja contains no alcohol. Oil of thuja is a colorless, campohraceous body destitute of astringency.

Internally, thuja is a terebinthinate. The oil is most too irritating for internal use. The ec. tr. is used in affections of the mucous tracts, especially dribbling of urine in the aged, enuresis of children, vesical atony, suppressed gonorrhea, and gonorrheal rheumatism. (Ec. tr. in doses of 3 to I5 drops.) Not very miscible with water.

Locally, thuja is very valuable in many conditions, but the proper preparation (alcoholic, non-alcoholic, etc.) must be used, or failure, if not great pain, will result. Fungoid granulations, fistulous openings, gangrene, papillomata, condylomata, venereal warts, hemorrhage from malignant growths, bleeding moles, purpura hemorrha gica, umbilical hemorrhage, bulging nevi, small, soft chancres, ulcerations upon uterine os, fissures, ptyalism, urethral carbuncles, syphilitic psoriasis, and many other conditions are treated by ec. tr., full strength, if upon the skin or directly upon warts or granulations. Upon mucous membranes or excoriated surfaces, 1-5 to full strength. Usually diluted with glycerine. In hydrocele, mix I 3 each of ec. tr. and warm water. Insert a large exploring needle into sac, and permit serous fluid to escape. Now inject through the needle, by means of a small syringe, the 2 f3 of the diluted ec. tr., and knead scrotum vigorously. Withdraw needle. For a half hour or so the pain is pretty severe, but a cure usually results. In hernia, the same solution, or even full strength (1/2 f3 every two weeks) is injected into the rings. Practice rigid asepsis in all injections, and be cautious.

In trachoma, pass wetted alum pencil over the everted lid (lightly), dry parts, and apply an ointment made of Long's thuja, I part, and vaseline, 3 to 8 parts. Aqueous thuja (0 strength) may also be used. Further diluted, it is used in pterygium with conjunctivitis. In general, the aqueous thuja is preferable upon sensitive membranes, as in granular urethritis and catarrhal conditions of the mucous channels, or in nasal polypi, gonorrhea, granulated cervix, mucous patches in vagina and throat, and in fistula (I part in 6, up to full strength). Thuja cerate (25%) is used in old skin troubles.