Note 30 — Chapter XII · INHERITANCE.

For these several statements, see Dr. Struthers ‘Edinburgh New Phil. Journal,’ July, 1863, especially on intermissions in the line of descent. Prof. Huxley, ‘Lectures on our Knowledge of Organic Nature,’ 1863, p. 97. With respect to inheritance, see Dr. Prosper Lucas, ‘L’Hérédité Nat.,’ tom. i. p. 325. Isid. Geoffroy, ‘Anom.,’ tom. i. p. 701. Sir A. Carlisle, in ‘Phil. Transact.,’ 1814, p. 94. A. Walker, on ‘Intermarriage,’ 1838, p. 140, gives a case of five generations; as does Mr. Sedgwick in ‘Brit. and Foreign Medico-Chirurg. Review,’ April, 1863, p. 462. On the inheritance of other anomalies in the extremities see Dr. H. Dobell, in vol. xlvi. of ‘Medico-Chirurg. Transactions,’ 1863; also Mr. Sedgwick in op. cit., April, 1863, p. 460. With respect to additional digits in the negro see Prichard, ‘Physical History of Mankind.’ Dr. Dieffenbach (‘Jour. Royal Geograph. Soc.,’ 1841, p. 208) says this anomaly is not uncommon with the Polynesians of the Chatham Islands; and I have heard of several cases with Hindus and Arabs.