774 INDEX. 



PAGE 



Libel, A, upon the Indians 748 



Libraries, Public, in France 766 



Liebig's Influence on German Science 639 



Life in Greenland 431 



Lights of Different Colors, Penetrating Power of 760 



Limestone, A Piece of 165 



Locust of the Kocky Mountains 605 



Lommel, Eugene 471 



Man, Comparative Psychology of 257 



Martineau and Materialism 129 



Martineau's Eeply to Tyndall 746 



Mayer, Alfred M 453 



Mental Faculties, Strange, in Disease 177 



" Overwork 765 



Merriraan, C. C , 702 



Metals, Behavior of, with Hydrogen 254 



Meteorite, Passage of a 766 



Meteorology of Sun and Earth 75 



" Arctic 124 



" Contributions to 763 



Michels, John 95 



Microcephaly 249 



Microscope, A Home-made. (Illustrated.) 95 



Migrations of Birds 761 



Mill, An Indian 503 



Mivart, St. George 409 



Modern Biological Inquiry 285 



" Art, Frailty of 379 



" Philosophical Biology 595, 710 



" Knowledge, Character of 724 



Museum Exchange 460 



" Godeffroy 699 



Natural Euthanasia 617 



IJature of Fluorescence. (Illustrated.) 471 



Nebula in Sagittarius. (Illustrated.) 269 



Nitrogen in Plants 503 



Notes 126, 255, 385, 510, 640, 768 



Numerals, Origin of the 380 



Obesity, Eeduction of 255 



Opium-Habit 767 



Opossums, (Illustrated.) 149 



Optical Illusion 254 



Origin and Development of Engineering 33 



Oscillations of Lakes 379 



Our Great American University 543 



Overwork, Mental 765 



Ownership of the Dead 322 



