INDEX OF VOLUMES I TO XX. 97 



VOL. PAGE 



Prairie and Forest, Distribution of (Misc.) xiii 122 



Prairie-Dog, An African. Frank Buckland xvi 318 



Prairies, Origin of (Misc.) x 633 



Why, are treeless (Misc.) xix 424 



Prayer-Test, TyndaU's (Ed. Tab.) ' vii 367 



Precocity a Sign of Inferiority (Misc.) xvii 430 



Cases of Kemarkable (Misc.) xvi 428 



Preece, W. H. Electric Lighting, Recent Advances in xix 378 



Electricity, Recent Wonders of. xx 669, 786 



Prehistoric Race, Extinction of (Misc.) xi 124 



Records xvi 545 



Relics at the Centennial Exposition (Misc.) ix 508 



Remains in California, Supposed (Misc.) xi 632 



Mine in Southern Colorado. H. Gannett xvi 666 



Times. T. M. Coan i 101 



Prenatal and Infantile Culture. E. Seguin x 38 



Prescott, A. B. Coffee and Tea, Chemistry of xx 359 



Fruit-ripening, Chemistry of xii 460 



Life, Material Resources of xi 339 



Ellen. Phosphorescence, Vegetable xvi 804 



G-. B. Edison's Telephonic and Acoustic Inventions xiv 129 



Preservation of Meat (Misc.) i 637 



of Wood (Misc.) i 508 



Preservative Process, A New (Misc.) xvi 717 



Press, Science and the. Ripley's Address on laying Comer-Stone of the 



Tribune Building (Misc.) iv 635 



Prestel, M. A. F. Weather, Moon's Influence on the x 56 



Preyer, W. Infant, Mental Development of the Human xvii 625 



Priestley, Joseph (Ed. Tab.) i 368, v 497 



T. H. Huxley vi 90 



Sketch of, with Portrait v 480 



Priestleyana (Misc.) vii 122 



Priestley's Celebration at Northumberland (Misc.) v 504 



Primitive Innocence (Misc.) xv 713 



Man, Emotions in the. Herbert Spencer vi 331 



Princeton, Science at. J. McCosh (Cor.) xviii 122 



Printing and the Perpetuity of Modern Civilization (Misc.) xiv 685 



Prize System and Mental Overwork (Ed. Tab.) xi 105 



Probabilities, Logic of. C. West (Cor.) xiii 236 



Problems, The Seven World-. Emil du Bois-Reymond xx 433 



Proctor, R. A. Astronomical Achievement, An American x 446 



Astronomy in America x 75 



Jupiter, News from iv 433 



Jupiter's Cloud-Masses, Movements of xi 81 



Meteoric Display, Expected, November, 1880 xvi 247 



Nebula, Great, in Orion iii 564 



Planet, A Giant i 286 



Scientific Research, Endowment of vii 354, 437 



Sea, Finding the Way at , iii 717 



Sketch of, with Portrait iv 486 



Star or Star-Mist xii 148 



7 



