the Germ Cells in Libellula Depressa,” Proc. Roy. Soc. Med., vol. 42, p. 841, 1925) have placed the paper stage, were prepared for the Mycerinus pyramid at Giza and for the use of the experi- ment has, however, not then recognised, that stage has been much experimental work already cited, C. W. Andrews (b. 1866) in England,