739 



INDEX. 



Electric ctirrents, kinds of ' 



Thompson on ^'^^ 



flash apparatus for photographing splash of a drop 199, 200 



power, unit of - - - 



quantity, unit of |*|| 



relay, invention of 



self-induction, discovery of 1^^ 



undulations. Hertz's experiments in ^84 



reflection and refraction of '<'23 



700 



waves, D. E. Jones on ''--' 



147 

 work, unit of 



Electrical conductors , Hertz investigation of ' -^ 



energy, specific character "^'^ ' 



Engineers, American Institute of 131 



exciters 



industry, capital invested in i^^ 



measurements, units of ^*^ 



photographs • '" 



units, definition and relation of m 



Electricians, International Congress of j^l 



Electricitv, age of , by M. Mascart J;J^ 



and light. Maxwell and Hertz on ^-^^ 



relation of ''^^ 



as the living motor ^*^ 



easy development of ^' 



decomposition by "^^^ 



discharge of, through exhausted tubes o4 



discovery of alternating current 1"! 



displacement currents ^^y 



fluid theory of J[^; 



history of knowledge of ||^'^ 



industrial, growth of |'^ 



measure of disturbance on wire 



.... ...~ 106 



origin ot 



partof, inanimallife 



phenomena of ^ "" 



propagated by the nerves J*J 



static, theorem of '^ 



unit of resistance 



velocity of waves of In^ 



Electrization of muscles 



Electro-dynamic disturbances in wires 



Electro-dynamics, science created by Ampere ^^^ 



Electrolysis in cell nutrition 



Electro-magnetic telegraph, made possible by Joseph Henry i^i 



theory of light |J^ 



wave of light 



Elliot, Scott, African exploration by ^^^ 



Elliott Bros., magnetometers of ^^^ 



Ellis, JohnT., on rain making V V"VV rr? 



Elsdale, Lieut. Col. H. , on scientific problems of the future ^o^ 



Embryology of bird's skull, Parker on 



