1. Fox and RamageProc. Roy. Soc., 1931,108 B, 157.
2. Lovatt Evans, C.Starling’s Physiology, 1941.
3. Salant and Mitchell, 1916Sollman’s Pharmacology, 1942.
4. Singh, I.J. Physiol,92, 62;Proc. Ind. Acad. Sci.,1944 a,19, 91; 1944 ft,20, 195; 1945,22, 123.