Arthritis deformans in its atrophic form (rheumatoid arthritis) is, perhaps, best defined as a chronic disease affecting many joints, principally the smaller ones. It occurs chiefly in the female sex, is due probably to the action of a toxin, and is characterised by changes in the cartilages and the soft structures surrounding the joints, thus causing great immobility and deformity. That arthritis is a disease of great antiquity is borne out by the fact that recently-unearthed bones from tombs of about 3700-1300 B.C. showed unmistakable evidence of the affection. In exarnination of remains in Egypt, remains representative of all periods from early predynastic times dovm to the Fifth Dynasty after Christ, "the disease which showed itself w...