In 1854, Garrod called attention to the fact that a considerable proportion of the gouty patients in hospital practice--at least 30 per cent.--was represented by painters and other workers in lead. This statement has since been confirmed by other observers, and the association of the characteristic symptoms of this form of metallic poisoning, such as the blue line on the gums, colic, and the different forms of paralysis, with both articular and visceral gout, especially the contracted kidney, is certainly frequent. The relation, however, of saturnine poisoning to gout in this association is not easy to determine, Garrod himself pointing out that while the women in the lead-works frequently had the colic, they but rarely had gout. The difference in susceptibility of different individuals to all forms of metallic poisoning is well recognized. It is more strikingly observed perhaps in mercurial and arsenical poisoning than in that of lead. It is well known that the internal use of lead as an astringent in cases of hemorrhage and intestinal catarrh is occasionally, though very rarely, followed by the evidences of lead-poisoning. This difference in susceptibility is perhaps explicable on the theory that persons inclined to gout have less power in eliminating the {112} metal than those who are not gouty, so that it is possible that plumbism is the effect rather than the cause of gout, as has been commonly supposed. Tanquerel des Planches found none of those changes in the kidneys as the result of plumbism such as are frequently met with in gout, and Rosenstein, who was able to produce saturnine epilepsy in dogs, found no renal changes to have occurred. Charcot and Gombault in recent experiments of feeding guinea-pigs with lead found changes in the kidneys similar to those produced by tying the ureters. EXCITING CAUSES.--Paroxysms of acute or subacute gouty inflammation of the joints, skin, or mucous membranes, as well as the neuroses of gouty origin, are excited by a variety of causes: errors in diet, both as to quantity and as to specific articles; excesses in the use of fermented liquors--even moderate indulgence, in persons with strong gouty tendencies--are perhaps the most common exciting causes. Sudden changes in temperature, and especially sudden changes in barometrical pressure, sometimes excite and often aggravate the sufferings of gouty persons. Blows, contusions, and mechanical strain frequently determine arthritic attacks; the large proportion of paroxysms affecting the metatarso-phalangeal joint of the great toe is explained by the fact that this joint is more exposed than any other to strain and injury. Finally, nervous exhaustion, from any cause, from overwork or sexual excesses, from grief, anger, or shock, may provoke any of the inflammatory or neurotic consequences of this disease.