INDEX. 605 



Page. 

 Coloration of tropical fishes, marine camoufleurs and their camouflage: the 



present and prospective significance of facts regarding the (Longley) 475 



Commerce, Secretary of (member of the Institution) xi 



Consolidated fund 4 



Constitutional league of peace in the Stone Age of America. The league of 



the Iroquois and its constitution (Hewitt) 527 



Cook, O. F. (Foot-plow agriculture in Peru) 487 



Council of National Defense 2, 113 



Coville, F. V xii 



Crawford, J. C xii 



Curtiss, R. H. (An account of the rise of navigation) 127 



D. 



Dall, Dr. William H xn, 91 



Daniels, Josephus, Secretary of the Navy (member of the Institution) xi 



Daughters of the American Revolution, report of 101 



Degeneracy, the problem of (Tredgold) 547 



Denmark, C. R xn 



Dennis, Representative Leonidas 14 



Densmore, Frances 53, 56 



Director of the Astrophysical Observatory xn, 20, 88, 108, 121, 185 



Discovery of helium and what came of it, the (Abbot) 121 



Dorsey, Harry W., chief clerk of the Institution xi 



Dyar, Dr. Harrison G 31 



E. 



Eakle, Prof. A. S 34 



Echinoderms, Springer collection of 4 



Eclipse of the sun, June 8, 1918, observations of 5 



Editors of the Institution and branches xi, xn, 15, 100, 101 



Eddy, the A. R. and M. H. donation 18, 39 



Ellis Memorial Collection 28 



Environment and evolution, the direct action of (Eropotkin) 409 



Erskine, Alfred M 17, 27 



Ethnological explorations in Colorado and Utah 12 



Ethnology, Bureau of American xn, 1, 5, 12, 15, 19, 112 



library 55, 92 



manuscripts 54 



publications 54, 101 



report 43 



Evans, Victor J 28, 06 



Evolution, environment and, the direct action of (Kropotkin) 409 



Evolution, insect, the fundamental factor of (Chetverikov) 441 



Evolution, irreversible, on the law of (Petronievics) 429 



Exchanges, International xi, 1, 5, 15, 21 



report 58 



Executive Committee of the Board of Regents xi 



report of 103 



Experiments of Dr. P. W. Bridgman on the properties of matter under high 



pressure (Abbot) 185 



Explorations and researches 5, 44 



