5410 Poles 



Polar distance of magnets, determination. 



Benoit, R. C. E. 84 (1877) 76-. 

 , . Borgen, C. A. der Hydrog. 



19 (1891) 49-, 93-. 

 Polarity. Delia Casa, L. Bologna Ac. Sc. Mm. 



7 (1867) 113-. 



, inverse permanent, of magnetic steel. 

 Righi, A. (xn) Kv. Sc.-Ind. 12 (1880) 364-. 



in metals. Sturgeon, W. Ph. Mg. 11 (1832) 

 270-, 324- ; 1 (1832) 31-. 



and neutrality. Hughes, D. E. B. S. P. 

 36 (1884) 405-. 



, permanent, in various substances. Lodge, 

 O. Nt. 33 (1886) 484-. 



of rifles. Spitter, J. C. N. 15 (1867) 

 15-. 



POLES. 



of bar magnet. Riecke, E. [1872] Gott. Nr. 



(1872) 251- ; A. Ps. C. 149 (1873) 62-. 

 , theory. Riecke, C. V. E. A. Ps. C. 



8 (1879) 299-. 



consequent. Tomlinson, C. C. N. 21 (1870) 



193-. 

 counter-, in magnetisation, and destruction of 



terminal poles. Duchemin, E. Mon. Sc. 15 



(1873) 508-. 



and neutral points. Berlin, A. A. C. 16 



(1869) 74-. 

 , relative position. Bertin,A. Strasb. 



S. H. Nt. Mm. 5 (Livr. 2 & B) (1862) 28 pp. 

 number at the surface of magnetic body. 



Stieltjes, . C. B. 102 (1886) 805. 

 position. Schiirr, C. J. de Ps. 7 (1898) 



282-. 



in bar magnet. Volpicelli, P. C. E. 64 

 (1867) 1197-. 



, and absolute measure of magnetic 



forces. Pouillet, C. S. M. C. E. 62 (1866) 

 257-. 

 , simple method of finding. Matter, 



F. C. G. A. Ps. C. 154 (1875) 474-. 



, determination. Petruschevsky, T. A. Ps. 



C. 152 (1874) 42-. 

 , . Mascart, E. E. N. C. E. 104 (1887) 



635-. 



in long magnets. Bouty, E. J. de Ps. 4 

 (1875) 367-. 



, and strength of magnet. Cazin, A. (ix) 

 Par. S. Phlm. Bll. 7 (1871) 178-. 



, thin magnets. Bouty, E. C. E. 



80 (1875) 879-. 



Power determination, etc. Scoresby, (Rev.) W. 



B. A. Ep. (1842) (pt. 2) 19. 



, lost, restoration. Muncke, G. W. Pogg. 

 A. 50 (1840) 221-. 



of magnet, effect of currents induced by 

 magnet. Wheatstone, (Sir) C. E. S. P. 15 

 (1867) 369-. 



in terms of power of component parts. 



Lenz, E. St. Pet. Ac. Sc. Mm. 3 (1838) 



(Bll. Sc.) i-. 

 , means of increasing. Scoresby, (Rev.) W. 



G. E. 6 (1838) 310-. 



, , and theory of magnets. Jamin, J. 



C. E. 76 (1873) 789-. 



Natural Magnets 5410 



Separation, magnetic, of non-magnetic material. 

 Wilkens, H. A. J., <& Nitze, H. B. 0. [1896] 

 Am. I. Mn. E. T. 26 (1897) 351-, 1089-. 



of magnetic from non-magnetic material, 

 apparatus for. Syo, E. de. Dingier 288 

 (1893) 203- ; 289 (1893) 227-. 



Separator, magnetic (Wenstrom). Cook, R. A. 



Am. I. Mn. E. T. 17 (1839) 599-. 

 , , of ore (Bald-Norton). Bald, C. M. 



[1890] Am. I. Mn. E. T. 19 (1891) 187-. 

 , , (Chase). Chase, H. S. [1892] 



Am. I. Mn. E. T. 21 (1893) 503-. 

 , , (Wetherill process). Borchers, W. 



Z. Elektch. (1896-97) 377-. 

 , , for zinc iron ores. Ferrares, E. [1894] 



Z. Elekttech. Elektch. (1894-95) 363-. 

 Separators, magnetic, forms. McNeill, H. C. 



I. & S. I. J. (1899) (No. 2) 18-. 

 Static electricity, influence. Canestrini, E. 



Ev. Sc.-Ind. 17 (1885) 1-, 33-. 

 Tempering of magnets. Clemandot, . Par. 



S. Ps. 86. (1885) 62-. 

 Temporary magnetism. Negro, S. dal. A. Sc. 



Lomb. Yen. 5 (1835) 165-. 

 . Gazzaniga, C. L. A. Sc. Lomb. Yen. 



6 (1836) 287-. 

 . Auerbach, F. A. Ps. C. 11 (1880) 



353-. 

 Uses of magnets. Keil, . QJ. Sc. (1829) 



(Pt. 2) 396-. 

 Vibrations, effect on temporary and residual 



magnetism. Berson, G. Toul. Ac. Sc. Mm. 



6 (1894) 226-. 

 , simultaneous, of 2 magnets. Obermann, J. 



Arch. Mth. Ps. 60 (1877) 1-. 



NATUEAL MAGNETS. 



Baked earths. Gherardi, S. (vi Adds.) N. 

 Cim. 18 (1863) 108- ; (vn) Bologna Ed. (1864) 



and bricks. Gherardi, S. Bologna Mm. 



Ac. Sc. 3 (1863) 151-. 

 and minerals, etc. Gherardi, S. 



Bologna Ac. Sc. Mm. 5 (1865) 399-. 

 Basalt, columnar. Barrett, W. F. [1889] 



Dubl. S. Sc. P. 6 (1888-90) 382-. 

 Basaltic rocks. Pockels, F. A. Ps. C. 63 



(1897) 195-. 

 Building brick. Gage, O.A.,<& Lawrence, H. E. 



Ps. Ev. 9 (1899) 304-. 

 Experiments. Elias, P. [1851] Amst. Ts. 



Ws. Nt. Wet. 5 (1852) 134-. 

 Haematite. Phipson, T. L. Par. Bll. S. C. 7 



(1867) 321-. 

 , residual magnetism. Abt, A. Orv.-Termt. 



Ets. (Termt. Szak) (1898) 152-, (Rv.) 80-. 

 Iron ore from deposit near Moravitza. Abt, A. 



Mth. Termt. Ets. 14 (1896) 33-; Mth. Nt. B. 



Ung. 14 (1898) 75-. 



ores. Greiss, C. B. Pogg. A. 98 (1856) 

 478- ; (vi Adds.) Nass. Jb. 11 (1856) 127-. 



. Abt, A. Orv.-Termt. Ets. (Termt. 

 Szak) (1900) 58-, (Rv.) 7-. 



Lava and similar rocks. Magnetisation of lava 

 by heat. Melloni, M. Em. At. 5 (1851-52) 

 666-; Nap. Ac. Sc. Mm. 1 (1852-54) 121-. 



597 



