KEY AND INDEX 



Birch, a student of Egyptian 

 writing, 1, 27. 



Birkeland, Christian, discoverer 

 of a method for obtaining 

 nitrogen from the air, 6, 

 306. 



Black, Dr. Joseph, his latent 

 heat observations on the sub- 

 ject of precipitation of vapor, 

 3, 184; disproved by Dr. 

 Wells, 3, 185; continues 

 Hale's study of the elasticity 

 of air, 4, n; discovery of 

 the properties of carbonic- 

 acid gas, 4, 12; studies con- 

 tinued by Cavendish, ibid.; 

 probable participation in the 

 development of Watt's ideas, 



6, 94; his experiments with 

 balloons, 7, 230. 



Blackett, his experiments with 

 steam locomotives, 7, 123. 



Blackwell, F. O., quoted as to 

 the efficiency of the electric 

 motor, 6, 262. 



Blaew, William, printing press 

 improved by, 8, 122. 



Blake, Dr. Clarence J., sug- 

 gested the use of the human 

 ear itself as a phonautograph, 



8. 79- 



Blake, Francis, inventor of a 

 telephone transmitter, 8, 84. 



Blanchard, Jean-Pierre, his at- 

 tempt to produce a dirigible 

 balloon, 7, 238. 



Blanquart, glass negatives im- 

 proved by, 8, 229. 



Blast-furnace, 6, 284; old and 

 new types of, 6, 285. 



B16riot, Louis, his successful 

 flight across the English Chan- 

 nel, 7, 294. 



Blood corpuscles, functions of, 

 4,135; important r61e played 

 by, 4, 136. 



Boats, the use of sails for pro- 

 pelling, 7, 56; steering with 

 oars, 7, 56; the invention of 

 the rudder, 7, 56; type of 

 boats used by the Greeks, 7, 

 57; vessels of the Romans, 



7, 57; boats constructed by 

 the Norsemen, 7, 58; medi- 



aeval ships, 7, 59; modern 

 sailing ships, 7, 60; early 

 attempts to invent a steam- 

 boat, 7, 63; Fulton's Cler- 

 mont, 7, 64; screw-propeller 

 boat invented by Stevens, 7, 

 68; sea-going steamships, 7. 

 73; ships built of iron and 

 steel, 7, 74; the use of turbine 

 engines on boats, 7, 82; the 

 adoption of liquid fuel on 

 boats, 7, 90. 



Boerhaave, Hermann, fame of, 

 4, 182; his classification of 

 the different branches of 

 medicine, 4, 183; his doc- 

 trines arranged into a "sys- 

 tem" by Hoffmann, 4, 184. 



Bolton, one of the inventors of 

 the collodion-emulsion pro- 

 cess, 8, 231. 



Bond, W. C., discoverer of the 

 inner or crape ring of Saturn, 

 3,44- 



Books, preservation of ancient, 

 2, 6; comparative number of, 

 issued in the age of Pericles, 

 6, 13. 



Bookbinding, the development 

 of, 8, 153. 



Borelli, "On the Motive of 

 Animals," 2, 188. 



Boscovich, Roger Joseph, the 

 ultimate constitution of mat- 

 ter as conceived by, 3, 293. 



Bose, George Matthias, inven- 

 tor of an electric machine, 2, 

 274; explanation of aurora 

 borealis, 2, 277. 



Botta, his excavations at the 

 site of old Nineveh first 

 brought tablet books to the 

 eye of modern scholarship, 

 8, 103. 



Boulevard Pasteur, the, 6, 179. 



Boulton, Matthew, associated 

 with Watt to found the most 

 famous of early steam-engine 

 companies, 6, 100. 



Bourseul, Charles, suggests an 

 electrical telephone, 8, 71.^ 



Bowden, H. L., the automobile 

 record established by, in 

 1905, 7, 164. 



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