INDEX OF VOLUMES I TO XX. 21 



VOL. TAOB 



Colleges, Science in the (Ed. Tab.) xviii 126 



Scientific Teaching in the (Ed. Tab.) xvi 556 



Self-Government in (Cor.). W. L. C. Stevens xix 697 



Collier, D. C. Grasshoppers' Ravages, Western (Cor.) ix 749 



Color, The Constants of. O. N. Rood ix 641 



in Anima's v 470 



in Animals (Misc.) xii 761 



in Flowers (Misc.) xix 717 



Colorado, Ancient Rnins of (Misc.) xii 120 



Marvine's Survey of Western (Misc.) vi 750 



Miuing in (Misc.) xvii 287 



Valley, Physical Features of. J. W. Powell vii 385, 531, 670 



Color-Blindness (Misc.) xiii 120 



S. R. Koehler xix 91 



Frequency of (Misc.) xi 250 



and Education of the Color-Sense (Misc.) xix 567 



Hereditary (Misc.) xix 423 



of Seamen (Misc.) xvi 285 



Tests for (Misc.) xx 859 



Color-Sense among Uncivilized People (Misc.) xix 138 



Education of the (Misc.) xvi 425 



in Savages (Misc.) xv 715 



Coloring Matter in Blood (Misc.) iii 251 



of the Waters in Seas and Lakes (Misc.) xvii 706 



Colors, Arsenical (Misc.) vii 126 



Goethe's Theory of. John Tyndall xvii 215, 312 



Reproduction of Ancient (Misc.) v 764 



Simultaneous Contrast of (Misc.) xii 118 



The Contrast of. O. 1ST. Rood xiv 1 



Colton, G. H. Springs, Spouting (Cor.) xix 554 



Combe, Autobiography of George. E. A. Youmans xv 109 



Combustion under Pressure (Misc.) ii 634 



Comet b, 1881, Constitution of (Misc) xx 427 



Biela's (Misc.) ii 762 



Coggia's (Misc.) v 637 



Comets. A. N. Skinner xix 790 



and Meteoric Streams. D. Kirkwood ... i 335 



of 1843 and 1880 (Misc.) xvii 714 



Tails of (Misc.) : ii 383 



Tails of (Misc.) xx 860 



What becomes of ? (Misc.) i 246 



Commercial Distress, Cause of. E. R. Leland (Cor.) xi 489 



Cause of. O. B. Bunce (Cor.) xi 615 



Manias (Ed. Tab.) x 371 



Complexion, Climate and. J. M. Buchan xvii 1 



Compressed Air, Effects of (Misc.) vii 122 



Effects of, on Animals (Misc.) x 120 



in Coal-Mining (Misc.) xii 638 



Locomotive in St. Gothard Tunnel. C. M. Gariel x 473 



Conant, W. C. Fuel, Water as, Fuel Gas xvi 653 



Conder, F. R. Explosions in Coal-Mines xv 200 



