INDEX. 407 



Page. 



Ash , Wonderful Properties of. ■ 133 



Asia Minor HI 



Asiatics, Use made of Camel in War by .. 118 



Association of Medical Superintendents of Hospitals for the Insane, meeting of 28 



Astaci ■ ^ 39 



Asteroids all of diminutive size 143 



Asteroids, Discovery of. 138, 139 



Asteroid Orbits distinguished from all others 144 



Asteroids, Relationship between 143 



Asteroids, Cause of 141 



Astraca, Orbit of. 141 , 144 



Astronomers, Association of, to discover Planet 137 



Astrology, Doctrines of, respecting Poisons 1--8 



Astronomical Discoveries in America 145 



Astrorfomical Expedition to Chile "o 



Astronomical Journal 3o 



Astronomical Journals, only two in existence 1" 



Astronomical Journal, Observations of Eclipse published in 17 



Astronomical Positions of Mexican States incorrect 279 



Atherina 319 



Atherinopsis notatus {SilveTside, Sand-Smelt) 338 



Atlanta, Classic Fable of 131 



Atlantic and Pacific Junction Company 93 



Atlantic Ocean, Depths of. 91 



Atmospheric Currents 190 



Atmospheric Pressure at Greenwich 218 



Atmospheric Pressure at Philadelphia 222 



Atmosphere, Pressure of. 182 



Atomic Constitution of Mixed Gases 193 



Atwater's Researches 11 



Audubon, Mr 347 



Auguste, Tension Tables of. 267 



Aulick, Com. J 39,42 



Auriferous Deposits of Vermont 39, 43 



Aurora Boreal Coruscations 227 



Aurora Borealis, Explanations of. 13 



Aurora Borealis, History of Exhibitions of 12 



Aurora Borealis, Memoir on, by Prof. D. Olmsted 12 



Aurora Borealis, Notices of, by Peter Force 13 



Aurora not seen at San Francisco 253, 258 



Austin, Joseph B 38, 42 



Ayres, Dr - 342 



Azow, Sea of. 122 



Aztecs, Suppositions respecting 311 



Bache, Professor A. D., Commission on Building Material 18 



Bache, Professor, Observations by 215 



Bache, Professor, Proposition by, relative to Bibliography 22 



Bache, Professor A. D 95,96 



Bactrian Camel, obtained at Odessa 122 



Bactrian Camel, Superior for Transportation 11^ 



