DURING the summer of 1877 I began an experiment, the results of which were given in a paper read before the Linnean Society, January 17, 1878. A number of Drosera Plants were freely supplied with meat, while another set were kept without animal food. At the end of the season the two sets were compared in various ways with the object of deciding whether or not carnivorous plants profit by an animal diet. In the abstract of my paper published in NATURE (vol. xvii. p. 222), it may be seen how numerous were the advantages gained by the fed plants.