XVI MEMOIR OP EUFFON. 



department he was assisted by M. D'Aubenton, and a supplementary 

 volume afterwards appeared. This contained only the Natural His- 

 tory of Quadrupeds. On account of his illness, the first volumes of 

 the History of Birds did not appear till 1771 ; in which he was assisted 

 be M. Gueneau de Montbeillard, and in the three last he received help 

 from the Able Beron. They form nine volumes. He afterwards 

 published a volume containing the " Natural History of Minerals," 

 and several supplementary additions, and he intended to have added 

 the History of Vegetables. The whole of these have been published 

 in thirty-eight volumes 4to., of which several translated editions have 

 appeared in this country. His other works, some of which we men- 

 tioned before, were the translation of " Newton's Fluxions," a 

 " Treatise on Accidental Colours," with various papers in the 

 " Memoirs of the Royal Academy of Science at Paris, from the year 

 1737 to 1742." 



