Lastly, it may be mentioned that this cheap edition being to some extent intended as a popular one, was made to include a glossary of technical terms, "given because several readers have complained... that some of the terms used were unintelligible to them." The glossary was compiled by Mr. Dallas, and being an excellent collection of clear and sufficient definitions, must have proved useful to many readers.] CHARLES DARWIN TO J.L.A. DE QUATREFAGES. Down, January 15, 1872. My dear Sir, I am much obliged for your very kind letter and exertions in my favour. I had thought that the publication of my last book ['Descent of Man'] would have destroyed all your sympathy with me, but though I estimated very highly your great liberality of mind, it seems that I underrated it. I am gratified to hear that M. Lacaze-Duthiers will vote (He was not elected as a corresponding member of the French Academy until 1878.) for me, for I have long honoured his name. I cannot help regretting that you should expend your valuable time in trying to obtain for me the honour of election, for I fear, judging from the last time, that all your labour will be in vain. Whatever the result may be, I shall always retain the most lively recollection of your sympathy and kindness, and this will quite console me for my rejection. With much respect and esteem, I remain, dear Sir, Yours truly obliged, CHARLES DARWIN. P.S.--With respect to the great stress which you lay on man walking on two legs, whilst the quadrumana go on all fours, permit me to remind you that no one much values the great difference in the mode of locomotion, and consequently in structure, between seals and the terrestrial carnivora, or between the almost biped kangaroos and other marsupials. CHARLES DARWIN TO AUGUST WEISMANN. (Professor of Zoology in Freiburg.) Down, April 5, 1872. My dear Sir,