3640 Sliding Friction 



experiments, and pivots of upright shafts. 



Girard, D. C. E. 55 (1862) 926-. 

 on inclined plane. Kimball, A. S. Am. J. 



Sc. 11 (1876) 181-. 

 influence of electric current. Schmidt, L. M. 



Elect. 25 (1890) 373-. 

 laws. Painleve, P. C. K. 121 (1895) 112-. 

 locomotive wheels, slipping. Rabeuf, . 



C. E. 85 (1877) 395-. 

 , . Roos, J. D. C. M. de. 's Gravenh. 



I. Ing. Ts. (1878) 133-. 



, . Durand-Greville, E. Bv. Sc. 

 39 (1887) 699-. 



, . Stevart, A. Ev. Sc. 41 (1888) 



219-. 

 method of investigation. Babo, C. H. L. von, 



<& Warburg, E. A. Ps. C. 2 (1877) 406-. 

 physical phenomena. Landsberg, K. E. [1862] 



(vm) A. Ps. C. 121 (1864) 283-. 

 railway carriages. Bochet, H. A. Mines 



13 (1858) 271- ; C. E. 51 (1860) 974-. 

 of rotation. Thurston, E. H. V. Nost. Eng. 



Mg. 31 (1884) 441-. 

 slipping of belts over pulleys. Zukovskij, N. E. 



[1893] Mosc. S. Sc. Bll. 91 (No. 1) (1894) 



5-; Fschr. Mth. (1893-94) 1353. 



Soils, friction on wood and iron. Schachbasian, 



J. Forsch. Ag.-Ps. 13 (1890) 214-. 

 Spheres, rough, friction between, experiments 



with shot. Reusch, E. A. Ps. C. 141 (1870) 



615-. 

 Spherometer caliper for pivots. Humason, 



T. A. Sch. Mines Q. N. Y. 13 (1892) 



341-. 

 Surfaces moving at low speeds. Ewing, J. A., 



& Jenkin, F. Phil. Trans. 167 (1877) 



509-. 



touching along curve. Olivier, T. Stockh. 

 Ak. Hndl. (1824) 16-. 



Traction diagrams. Tomlinson, T. Elect. Ev. 



39 (1896) 38-, 72-, 100-, 129-, 161-, 233-, 



457-, 754-. 

 Tractive resistance of carriages. Dupuit, . 



C. E. 9 (1839) 698-; 10 (1840) 194-. 

 . Morin, A. C. E. 10 (1840) 101- ; 



12 (1841) 211-. 

 (Morin). Dupuit, . C. E. 



12 (1841) 482-; Par. A. Pon. Chauss. 3 



(1842) 261-. 



on different kinds of roads. 

 Fuss, N. Tilloch Ph. Mg. 13 (1802) 115-, 

 257-, 363-. 



road vehicles. Hele Shaw, . B. 

 A. Ep. (1900) 868-. 



wheeled vehicles. Meikle, H. Tilloch 



Ph. Mg. 53 (1819) 197-. 

 Work absorbed by friction. Mahistre, G. A. 



[1860] (xn) Lille S. Mm. 7 (1861) 1-, n. 



in boring guns. Coquilhat, . 



Liege Mm. S. Sc. 4 (1847) 279-. 



of driving axles. Fievet, A. [1858] 



(xn) Lille S. Mm. 5 (1859) 429-. 



Fulling, theory. Monge, G. Hermbstadt Ms. 

 2 (1814) 379-. 



Hardness 3640 



HAEDNESS. 

 (See also 3210 Crystals.) 



Clarinval, E. A. Mines 17 (1860) 87-. 

 Hertz, H. R. (xn) Berl. Ps. Gs. Vh. 1 (1882) 



67. 

 Jannettaz, P. As. Fr. C. E. (1893) (Pt. 1) 



190- ; Gen. Civ. 22 (1892-93) 366, 388-. 

 Absolute scale. Auerbach, F. A. Ps. C. 



58 (1896) 357-. 

 Crystalline and vitreous substances. Jannettaz, 



P., <& Goldberg, . As. Fr. C. E. (1895) 



(Pt. 2) 417-. 

 Definition and determination. Hugueny, F. 



Strasb. Mm. S. Sc. 6 (1866-70) (livr. 1) 



12pp. 



DETERMINATION METHODS. 



Kick, F. Dingier 273 (1889) 10-. 



absolute measurement. Auerbach, F. A. 



Ps. C. 43 (1891) 61-. 

 especially for plastic bodies. Auerbach, F. 



A. Ps. C. 45 (1892) 262-. 

 grinding method. Rosiwal, A. Wien Az. 



30 (1893) 104-. 

 for metals. Martens, A. Cztg. Opt. 9 (1888) 



159-. 

 , apparatus. Turner, T. B. A. Ep. 



(1886) 554-. 

 , indentation test. Unwin, W. C. I. CE. 



P. 129 (1897) 334-. 

 and minerals, apparatus. Kosmann, . 



Bresl. Schl. Gs. Jbr. (1889) 83. 

 microsclerometer for minerals. Jaggar, T. A. 



(jun.) Am. J. Sc. 4 (1897) 399-. 

 for minerals. Pfaff, I. B. A. F. (xi) Munch. 



Ak. Sb. 13 (1884) 55-. 

 rocks. Behrens, T. H. Delft EC. Pol. A. 



3 (1887) 108-. 

 sclerometer. Grailich, W. I., <& Pekarek, F. 



Wien SB. 13 (1854) 410-. 

 . Jannettaz, P. C. E. 116 (1893) 687-. 

 for steel. Scoresby, (Rev.) W. W. Yorks. 



P. Gl. S. 2 (1842-48) 78-. 

 Young's modulus as measure. Hartig, E. 



Giving. 37 (1891) 339-. 

 . Kick, F. Dingier 281 (1891) 



292-. 



Diamond, action in ruling lines on glass. 



Rogers, W. A. [1885] Mcr. S. J. 6 (1886) 



16-. 

 , use for working hard stones. Betocchi, A. 



Em. At. N. Line. 22 (1869) 3-. 

 Glass, hardness and elasticity. Auerbach, F. 



A. Ps. C. 53 (1894) 1000-. 



HARDENING PROCESSES. 



glass, tempering. Siemens, F. V. Nost. Eng. 



Mg. 33 (1885) 105-. 

 , . Kowalski, J. Prace Mt.-Fiz. 2 (1890) 



93-; Fschr. Ps. (1890) (Ab. 1) 52. 

 hammer-hardening. Duhem, P. Bordeaux S. 



Sc. PV. (1898-99) 149-. 



347 



