1. Colle, J., Duke-Elder, W. S. and Duke-Elder, P. M.-Jl. Physiol., Vol. LXXI, p. 1. 1931.
2. Duke-Elder, W. S.-Jl. Physiol., Vol. LXI. p. 409, 1926, Duke-Elder, P. M. and W. S.-Proc. Roy. Soc. (B), Vol. CVII, p. 332, 1930.
3. ACCORDING to Hirschberg, Sir William Read published a "Treatise of the eyes containing a short, but exact, description of the structure, situation.... as also causes, symptoms and cures of 130 diseases incident to them,";Rep.,;chir; This information, he states, is obtained from the Biog. Lexicon, Vol. IV, 683; Haller, Bib,1706