INDEX TO VOLUME 111 



445 



NOBLK. 



Noble's, Cftpt., explosives, researches 



on, 351. 



Nomenclature of steel and iron, dis- 

 ' ti notions difficult to draw and 



maintain. 148. 

 Novels, reading of, 361. 

 Nuremberg, Trade Museum of, 388. 

 Nystrb'm, C. A., duplicate telegraph 



announced by, 167. 



OCCUPATIONS should be packed into 

 the day, 360. 



Oersted, electro-magnetic telegraphy 

 founded by, 74. 



Ohm's law, 32, 321 ; illustration of, 

 32 ; statement of, 32. 



Ohm (Act rr initiation of, by Glaze- 

 brook, 325, 416 ; by international 

 committee, proposed, 324 ; by 

 Lord Rayleigh and Mrs. Sidgwick, 

 324, 325, 416 ; Wiedemann's four 

 ways of, reference to, 325) ; mer- 

 cury measure of, 417. 



Old English system of technical 

 education, 275. 



Open fireplaces, radiant heat with 

 ventilation from, 246, 340, 341 ; 

 sanitary value of, 341. 



Open hearth process, 61 ; not limited 

 to time for results, 141 ; metal, 

 dead, melted in, 141 ; steel rails 

 made by, in 1867, tested by Great 

 Western Railway, 141. 



Open hearth steel, 275,000 tons from, 

 . in 1877, 225. 



Operative classes, intelligent but 

 unscientific, 85. 



Oran and Carthagena cable, frac- 

 ture of, to what due, 21 ; recovery 

 of, 21. 



Owen's College, foundation of techni- 

 cal university, 127. 



Oxygen as fuel, 90. 



Oxygen in outer solar atmosphere, 

 311 ; Smyth, Prof. P., on, 311 ; 



PHYSICAL EFFECTS. 



Stoney, Prof., on, 312 ; MeMola, 

 R., on, 312. 



PACINOTTI ring, advantages of, 399 ; 

 description of, 399 ; Gramme ap- 

 plied, :{'.!) ; publication of, 368. 



Page, electric transmission of power 

 suggested by, 405. 



Palliser gun, reference to, 59. 



Panama Canal and M. de Lesseps, 

 348 ; commercial importance of, 

 348. 



Papin's original steam cylinder, 112. 



Paris Electrical Exhibition, electric 

 light at, 285 ; electrical railway 

 at, 287, 331, 409. 



Paris gas works, Ellisen's experi- 

 ments at, 339. 



Patent laws, proposed committee 

 on, 57. 



Patent Office as educational esta- 

 blishment, 57. 



Patent system, evils of, 54 ; theory 

 of simple and equitable, 54. 



Peclet, reference to, 210. 



Percy, J., metallurgy of iron and 

 steel, 126 ; steel, definition, refer- 

 ence to, 147. 



Perfect engine, 192. 



Performance, theoretical and actual, 

 of engines, table of, 105. 



Perkin, W. H., influence of, on coal 

 tar industries, 336. 



Perkins' engine, economy of, Bram- 

 well's, Sir F., report on, 342. 



Pernot, puddling, mechanical, re- 

 ference to, 149. 



Phillipart, steel, definition of, re- 

 ference to, 147. 



Phonographic analogous to brain 

 action, 205, 206. 



Phosphorus neutralized by ferro- 

 manganese, 142. 



Photophone of Bell, 267. 



Physical effects, measurement of, 

 411. 



