Copy letter from unknown correspondent, to Dr Henry Charlton Bastian, Fellow of the Royal Society Regarding his paper, 'Note on the Transformation in the Course of Three or Four Days of Entire Contents of the Egg of Hydatina senta into a Large Ciliate belonging to the Genus Otostoma', the correspondent provides Bastian with a recommendation from the Zoology Committee asking him to provide more proof of his observations, as his statements are of such an usual character. 17 April 1902