GENERAL INDEX 



Low-Temperature Researches, 

 The Royal Institution and 

 the, Chapter III, 5, 29. 



Low temperature, experiments 

 with, 5, 39-41; electrical and 

 magnetic conditions at, 6, 

 56; changes in color of sub- 

 stances at, 5, 57; substances 

 made luminous by, 6, 58; 

 effect of, upon the strength of 

 materials, 6, 59; decrease of 

 chemical activity at, 5, 60; 

 approach to the absolute zero, 



6, 69. 



Lubbock, Sir John (later Lord 

 Avebury), a recruit to the 

 Darwinian theory, 4, 175. 



Ludolff, Christian Friedrich, ex- 

 periment with the electric 

 spark, 2, 276; 6, 219. 



Lumiere, Auguste, his work in 

 color-photography, 8, 243. 



Lumiere, Louis, his work in 

 color-photography, 8, 243. 



Lure of the Unknown, The, 7, 



45.- 



Lusitania, description of turbine 

 engines of, 6, 128; in size and 

 speed marks an epoch in 

 navigation, 7, 82. 



Lyell, Sir Charles, repudiated all 

 thought of catastrophism, 3, 

 88 ; he adopted and extended 

 the Huttonian doctrine, 3, 



22; his theories are changed 

 y Darwin's Origin of Species, 

 3, 97; claimed that past 

 changes of the earth's surface 

 have been like present 

 changes, 3, 141; accepts Dar- 

 win's theory, 4, 174. 

 Lyncean Society, 2, 200. 



McDonald, Arthur, his auto- 

 mobile record at Ormonde, 



7, 165. 



McDonough, J. W., produced a 



practical screen-plate, 8, 242. 

 McKay, inventor of a machine 



for sewing leather, 9, 112. 

 MacMillan, Kirkpatrick, treadle 



bicycle invented by, 7, 155. 

 Magdeburg sphere, name given 



to Von Guericke's apparatus 



for showing atmospheric pres- 

 sure, 2, an; 6, 66. 



Magellan, Ferdinand, rounded 

 the southern point of South 

 America and reached the 

 Philippines, in 1521; the cir- 

 cumnavigation of the globe by 

 his ships afforded an unchal- 

 lengeable demonstration of the 

 rotundity of the earth, 7, 47. 



Magendie, Frangois, and phys- 

 ical diagnosis, 4, 203. 



Magnet, electric, first con- 

 structed by Sturgeon, 6, 176; 

 constructed by Joseph Henry, 

 6, 177; an essential element 

 of the practical dynamo, 6, 

 174, 1 80. 



Magnetism, The Modern De- 

 velopment of Electricity and, 

 Chapter VII, 3, 229. 



Magnetism, studies of, by Oer- 

 sted, 6, 176. 



Magnetized needle, constitutes 

 the mariner's compass, 7, 7. 



Majestic, one of the first twin- 

 screw boats to make ocean- 

 records, 7, 81. 



Malpighi, Marcello, demon- 

 strated passage of blood from 

 arteries to veins through 

 capillaries, 2, 178; dissec- 

 tions of animal tissues and 

 plants, 2, 297, 298. 



Mammalian types, the living 

 fauna of Australia to-day 

 existed in Europe and died 

 out in the tertiary age, 3, 160. 



Man, struggles with nature, 6, 

 3-6; the tool-making animal, 

 6, 6-8; characterized by na- 

 ture of his implements, 6 , 89 ; 

 emancipated from thraldom 

 of weather by clothing and 

 fire, 6, 10 ; becomes agricul- 

 turist, 6, it ; the ever-insis- 

 tent problem of his existence, 

 6, 12; performs work by 

 muscular system alone, 6, 53. 



Mantle, gas, method of making, 

 6, 21 1 ; use of collodion and 

 castor oil for strengthening, 

 6, 21 1 ; Clamond method of 

 manufacture, 6, 212. 



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