Copy letter from Francis Alexander Towle, Assistant Secretary of the Royal Society; to the Secretary,The Clarendon Press, Oxford Informs Clarendon Press that they can expect permission to reproduce in the book 'Experimental Embryology' by Mr. G. R. de Beer, figure 2 for a paper by Dr. Creswell Shearer in Proceedings B.93 ['On the heat production and oxidation processes of the echinoderm egg during fertilisation and early development']. Subject to acknowledgements being made, and the consent of the author. 30 January 1926