KEY AND INDEX 



Singer, Isaac M., inventor of the 

 modern type of sewing-ma- 

 chine, 9, 97. 



Siphon recorder, invented by 

 Lord Kelvin, 8, 45. 



Sirius, made a record transat- 

 lantic voyage in 1838, for the 

 first time using steam alone 

 as a motive power, 7, 73. 



Skyscraper, The Modern, Chap- 

 ter VII, 9, 162; the develop- 

 ment of, 9, 162; the steel 

 frame, 9, 164; the problem 

 of heating, 9, 166; the inven- 

 tion of the Franklin stove, 9, 

 167; steam adapted to heat- 

 ing, 9. 1 68; the invention of 

 the elevator, 9, 169; new 

 tools and new methods, 9, 

 175; some thought-provoca- 

 tive statistics, 9. 178. 



Sledge, a modified form of the 

 lever, principle of the, 6, 58. 



Slide-rule, engineer's, invented 

 by Joshua Routledge, 6, 120. 



Sloane's, Sir Hans, collection, 

 purchased by British govern- 

 ment, 6, 4; finest of its kind 

 in existence, 6, 5. 



Small-pox, JTenner's discovery 

 of inoculation for preventing, 

 4, 190-196. 



Smith, William, and fossil shells, 

 3, 74; his discovery that 

 fossil rocks are arranged in 

 regular systems, 3, 75. 



Smith, Willoughby S., system of 

 wireless telegraphy installed 

 by, 8, 51. 



Smyth, Piazzi, the idea of the 

 gyroscope on ships first put 

 into operation by, 7, 217. 



Snell, Willebrord, discovers the 

 law of refraction, 2, 119. 



Societies, scientific, of the seven- 

 teenth century, 2, 198. 



Solar and telluric problems, 6, 

 205-213. 



Solubility, as explained by Ost- 

 wald and Mendeleef, 5, 218- 

 219. 



Some Physical Laboratories and 

 Physical Problems, Chapter 

 IV, 6, 73. 



Some Medical Laboratories and 

 Medical Problems, Chapter 

 VII, 6, 178. 



Some Unsolved Scientific Prob- 

 lems, Chapter VIII, 6, 203. 



Somerset, Edward, describes 

 his apparatus for raising 

 water by expansion force of 

 steam, 6, 84. 



Sommerring, telegraph of, 8, n. 



Sothic cycle measured by the 

 heliacal rising of Sothis, 1, 

 40. 



Sothis, the Egyptian name of the 

 dog-star Sirius, the rising of 

 which in the morning sky 

 marked the beginning of the 

 new year, 1, 38. 



Soundings and Charts, 7, 41. 



Southey, Hon. R., South- African 

 colonial secretary, sent first 

 South-African diamond to 

 Paris Exposition, 1867, 9, 316. 



Sovereign of the Seas, The, de- 

 scription of, 7, 60. 



Spallanzani, Lazzaro, rival of 

 Hunter, 4, 86; studies of 

 spontaneous generation, 4, 

 87; his chemical theory of 

 digestion, 4, 88; elaborates 

 upon experiments of R6au- 

 mur, 4, 89; theory of gastric 

 juices, ibid.; experiments in 

 mysteries of respiration, 4, 93. 



Spark recorder, 8, 45. 



Spectroscope, the, perfected by 

 Kirchhoff and Bunsen, 3, 62; 

 4. 69; wonderful revelations 

 of, 3, 63; the results of the 

 studies of Rutherfurd and 

 Secchi, 3, 64; what it reveals 

 of the nature and condition of 

 the stars, 3, 65; it discovered 

 the existence of " dark stars "; 

 its power to record the actual 

 motion of stars, 3, 66; the 

 speed of an invisible planetary 

 body may be determined by 

 it, 3, 67; it determined the 

 character and composition of 

 the nebulae, 3, 69; confirms 

 the theory that meteorites and 

 shooting-stars are one in kind 

 and origin, 3, 172; and 



