[Footnote 8: _Arch. Gén._, vol. ii. 641, 1866, and vol. i. 54, 1867, quoted by Tuckwell.] That heredity predisposes to acute articular rheumatism is admitted by nearly all modern authorities, even Senator, while speaking of it as "a traditional belief," not venturing to deny it. The frequency of the inherited predisposition Fuller placed at 34 per cent.; Beneke, quoted by Homolle,[9] at 34.6 per cent; Pye-Smith at 23 per cent.[10] Such predisposition favors the occurrence of the disease in early life, but does not necessarily determine an attack of acute rheumatism in the absence of the other predisposing or exciting causes. That the inherited bias or mode of vital action or condition of tissue-health may be so great as, per se, to induce an attack of the disease, is held by some authorities. It is probable that not only acute articular rheumatism in the parents, but simple chronic articular rheumatism and those forms grouped under the epithet rheumatoid arthritis, may impart a predisposition to the acute as well as to the chronic varieties of articular disease just mentioned. But owing to the obscurity which still surrounds the relations existing between acute articular rheumatism and rheumatoid arthritis this point needs further investigation. In what the inherited predisposition to acute articular rheumatism consists we are ignorant; to say that it imparts to the tissues or organs a disposition to react or act according to a fixed morbid type, or that some of the nutritive processes are perverted by it, is merely to state a theory, not to explain the nature of the predisposition. [Footnote 9: _Nouv. Dict. de Méd. et de Chir._, t. 31, 557.] [Footnote 10: _Guy's Hospital Reports_, 3d Series, xix. 320.] No type of bodily conformation or temperament can be described that {22} certainly indicates a proclivity to acute articular rheumatism; nor is there any change in the constitution of the tissues or fluids of the body by which the proclivity may be recognized. We infer the existence of the inherited predisposition--the innate bias--when rheumatism is found in the family history; when acute rheumatism or cardiac disease, or chorea not produced by mental causes, occurs in childhood; when the first attack of acute articular rheumatism is succeeded by subsequent attacks; and especially when the intervals between the attacks are short. Goodhardt has recently furnished valuable, but not conclusive, evidence to prove that in children obstinate headaches, night-terrors, severe anæmia, various neuro-muscular derangements, such as torticollis, tetany, muscular tremors, stammering, incontinence of urine, recurring attacks of abdominal pain, with looseness of the bowels quickly succeeding a meal, the cutaneous affection erythema nodosum, are indications of a rheumatic bias or predisposition.[11] [Footnote 11: _Guy's Hospital Reports_, 3d Series, xxv.]