TEETH

are made of a bony material, dentine, and tanner for the tannin it contains. The Pharma cop a i a con- | covered by a modified skin which has been so ——. tains oak-galls, = lebaree kino, catechu amongst others | with lime salts as to form a De ipa: shell of extreme which owe their value to the presence of tannin. Tannin | hardne known as enamel. ce teeth receive nerves and is an astringent; by coagulating the albumin with which | blood-ve els, which break up into minute branches in 8 it comes in contact, it checks —— and diarrhea. | cavity in the centre of the tooth, called the pol cavity, Clean linen rags dipped in a strong solution of tannin | corresponding to the marrow cavity of other freshly prepared may be applied to abrasions to check | pulp cavity is highly sensitive, whilst the other parts of hamieihees. Its internal administration is best in medical | the tooth are not; hence has arisen the ar ae custom hands, as there are many other drugs that check diarrhea | of calling the pulp cavity the nervo of the The roots ~ which upset the stomach le , Tea which has been infused | of a tooth are tho fangs; the part of the tooth above the for longer than three minutes beomes rich in tannin and | gum is ths crown; the junction of these is the neck of the is a frequent cause of indigestion. This risk may be avoided | tooth. by pouring the tea into an empty teapot at the end of threo The first set, or milk teeth, consist of — In health minutes; tho tea may thon tend under a cosy for any length | tho firet teeth cut are the central lower ones; these of time without harm. Tea is not a wise beverage to take | aro out at the sixth month. At twolve months there should TEETH, [s. 415]