[5] The portrait of Heberden in his 86th year was painted by Sir William Beechey, R.A., who when he got to Windsor found he had forgotten his canvas and sent for a shirt on which he painted the picture, now in the dining-room of the Master’s Lodge, St. John’s College, Cambridge; there are two copies in the possession of the Heberden family, and one in the Censors’ room of the Royal College of Physicians. For some of this information I am indebted to Mr. W. B. Heberden and to Mr. W. Fleming, Bedell of the Royal College of Physicians of London.
[6] The Cambridge University Press, 1913.
[7] Vide Gentleman’s Magazine, 1851, N.S., xxxv. part i. 205.
[8] Γηροκομία βασιλική or The Pourtract of Old Age wherein is contained a Sacred Anatomy, both of Soul and Body, and a Perfect Account of the Infirmities of Age Incident to them Both, by John Smith, M.D., London, 1665.
[9] Maupas, Arch. de zool. expér., 1899.
[10] Woodruff, L. L., Proc. Nat. Acad. Sc., Washington, D.C., 1921, vii. 43.
[11] Woodruff and Erdmann, Proc. Soc. Exper. Zool., N.Y., 1913–14, xi. 73.
[12] Child, C. M., Senescence and Rejuvenescence, p. 310, Chicago, 1915.
[13] Huxley, J. S., Journ. Microscop. Sc., 1921, lxv. 643.
[14] Robertson, T. B., and Ray, L. A., Journ. Chem. Biol., 1919, xxxvii. 455.