Marked action upon the jaws. Of great use in exostosis, gum abscess, difficult teething. Nodosities, caries of bone, etc. Osteitis, periostitis, osteosarcoma; rachitis. Tumors in general. Bone necrosis. Necrosis and sinus after mastoid operation.

Dose.--Lower triturations.

Face.--Ulceration of nasal bones. Facial neuralgia from carious teeth and after extraction. Toothache, with swelling about jaws. Abscess of gums. Enlargement of maxillary bone. Cervical glands enlarged and indurated.

Relationship.--Compare: Silica; Mercur; Phos; Conchiolinum--Mother of pearl (diaphysis of bone affected; parts extremely sensitive to touch). Amphisbena-Snail-like lizard (great affinity for the jaw bones, worse by air and dampness). Slag--(Great itching of parts).