Professor Parkes. John, I've often heard people express great interest in the way your scientific ideas and work developed. Would you tell us something about it?Sir John Hammond. Well, of course I am primarily interested in agriculture. I was sent to Cambridge to do agriculture in 1906, but my tutor advised me to take a degree in pure science first, so I took the Tripos before doing agriculture. After that my interest became centred on animals.I got a 3-year scholarship from the Ministry to work with Marshall on fertility and milk secretion. That's where I made a start. My scholarship ended in October 1914, just in time for me to go off to the Army. During the 3 years, I absorbed a great deal of science from Marshall, and I attended a lot of lectures in the University — Assheton, for example, on Embryology — anything related to
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