500 INDEX. 



Lc Conte, Dr. Jno. L. Colcoptera 22 



Legeudie. Memoir of, by Elie de Beaumont 1:57 



Lebmaun, F. Collections by 48 



Leidy, Prof. Jos. Cretaceous reptiles of United States 22 



Fossils 52 



Letters :^, 116, 318, 399,411,404 



Libraries. Jewett's services to 128 



Library. Character of 110 



Number of books, &c. , added in 1 867 60 



Eeasous for transfer of to Congress 56 



Value of transfer to Congress 115 



Light. Researches on, see Faraday 240 



Lightning. Effects of .318,319,320,321,322 



Liudhagen, Dr. G. Letter from 125 



Linnceus and Jussieu correspondence 253 



List of expeditions and other sources from which specimens in government museum 



■were derived 76 



of meteorological stations and observers .*. 79 



of works published by the Institution 22 



Lloyd, W. Alfred. Letter from 121,122 



Lockhart, James. Explorations 44 



Loew , H. Monograph of Diptera 22 



Lulk, Count de. Letter from 120 



Maclean, Rev. Dr. John. Election as Regent 108 



Acts of, as Regent : 108,113,115 



Magnetic observations of Prof. A. D. Bache 21 



Magnetism, see Faraday - 227 



Mailly, Ed. History of Royal Institution of Great Britain 203 



Mammoth. Cotemporary with man 335 



Man. Cotemporary of the mammoth 335 



Early mental condition of 391 



March, W. T. Explorations 46 



Marey, M. On natural history of organized bodies 277 



Marietta, O. Meteorology of, Hildreth 23,32 



Marsh, Hon. G. P. Acknowledgments to 39 



Martiu, Samuel D. Account of lightning discharge 320 



Mathematics. Prize questions 481 



See Memoir of Legendre 1 37 



See Taylor, E. B 391 



See Taylor, W. B 119 



Matteucci, Charles. Electrical currents of the earth 305 



Mayberry, S. P. Letter from 125 



McDonald, E. Explorations 44 



McDougall, J. Explorations 44 



McFnrlane, Robert. E.xplorations 44 



Jledical department. Museum 19 



Meek, F. B. Check list of fossils 22 



Fossils 52 



Palrpontology of upper Missouri 21 



Meigs, Dr. J. Aitkcn. Description of skull 412 



Members, ex officio, of the Institution 6 



Memoir of C. C. Jewett 128 



W. H. Harvey 131 



Legendre 137 



