HOP] 



269 



[HOP 



Hopkins, Benjamin John. Observations of the 

 great Comet (b) 1882, made at Dalston, London, 

 E. Astron. Soc. Mouth. Not., 43, 1883, pp. 90-91. 



Hopkins, Evan. To reference in No. 7 (Vol. 7) 

 add United Service Instit. Journ., 10, 1867, pp. 

 85-101. 



10. *The de-magnetization of iron ships, 

 and of the iron beams, etc., of wooden vessels, to 

 prevent the deviation of the compasses, experi- 

 mentally shown by means of a model. [Experi- 

 ments on board the Northumberland.] [1867.] 

 United Service Instit. Journ., 11, 1868, pp. 260 

 -268. 



Hopkins, (Rev.} George Hanslip. 2. On vapor- 

 ising metals by electricity. Nature, 10, 1874, 

 pp. 190-191. 



Hopkins, George M. Long-distance telephony. 

 Instit. Civ. Engin. Proc., 72, 1883, pp. 197-198. 



Hopkinson, John. 11. On the distribution of 

 the graptolites in the lower Ludlow rocks near 

 Ludlow. Brit. Assoc. Rep., 1875 (Sect.), pp. 

 69-70. 



12. On some points in the morphology of 



the Rhabdophora. Brit. Assoc. Rep., 1881, pp. 

 649-650; Geol. Mag., 8, 1881, pp. 448-449; 

 Ann. Mag. Nat. Hist., 9, 1882, pp. 54-57. 



Hopkinson, John, & Lapworth, Charles. De- 

 scriptions of the graptolites of the Arenig and 

 Llandeilo rocks of St. Davids. [1874.] Geol. 

 Soc. Quart, Journ., 31, 1875, pp. 631-672. 



Hopkinson, (Dr.) John. 13. Note on the im- 

 pact of elastic rods. [Cf. No. 7 ( Vol. 7).] Messenger 

 of Math., 4, 1875, pp. 22-24. 



14. Certain cases of electromotive force 



sustained by the action of electrolytes on electro- 

 lytes. Roy. Soc. Proc., 24, 1876, pp. 183-186. 



15. The residual charge of the Leyden jar. 



Roy. Soc. Proc., 24, 1876, pp. 407-408; Phil. 

 Trans., 166, 1877, pp. 489-494; Phil. Mag., 2, 

 1876, pp. 314-315. 



16. Residual charge of the Leyden jar. 



2. Dielectric properties of various glasses. [1876.] 

 Roy. Soc. Proc., 25, 1877, pp. 496-497; Phil. 

 Trans., 167, 1878, pp. 599-626; Phil. Mag., 4, 

 1877, pp. 141-142. 



17. Refractive indices of glass. [1877.] 

 Roy. Soc. Proc., 26, 1878, pp. 290-297. 



18. Electrostatic capacity of glass [and of 



liquids]. [1877-80.] Roy. Soc. Proc., 26, 1878, 

 p. 298; 31, 1881, pp. 148-149, 347-348; Phil. 

 Trans., 169, 1879, pp. 17-23; 172, 1882, pp. 

 355-373. 



19. On the torsional strain which remains 



in a glass fibre after release from twisting stress. 

 [1878.] Roy. Soc. Proc., 28, 1879, pp. 148-154. 

 20. On the quasi-rigidity of a rapidly 

 moving chain. [1878.] Birmingham Phil. Soc. 

 Proc., 1, 1879 (Pt. 2), pp. 70-72. 



21. On electric lighting. Instit. Median. 



Engin. Proc., 1879, pp. 238-249 ; 1880. pp. 266- 

 274 ; Nature, 22, 1880, pp. 42-44 [Pt. 2 only]. 



Hopkinson, (Dr.) John. 22. On the stresses 

 caused in an elastic solid by inequalities of 

 temperature. [Cf. No. 5 (Vol. 7).] Messenger 

 of Math., 8, 1879, pp. 168-174. 



23. On high electrical resistances. Phil. 



Mag., 7, 1879, pp. 162-164. 



24. Note on Mr. E. H. HALL'S experi- 



ments on the "Action of magnetism on a per- 

 manent electric current." Phil. Mag., 10, 1880, 

 pp. 430-431. 



25. Some points in electric lighting. 



[Lecture.] Van Nostrand's Engin. Mag., 29, 



1883, pp. 394-410; Nature, 27, 1883, pp. 592 

 -594. 



26. On the refractive index and specific 



inductive capacity of transparent insulating 



media. [1882.] London, Phys. Soc. Proc., 5, 



1884, pp. 38-40; Phil. Mag., 13, 1882, pp. 242 



-244. 

 Hopkinson, (Dr.) John, & Stokes, (Sir) George 



Gabriel. On the optical properties of a titano- 



silicic glass. Brit. Assoc. Rep., 1875 (Sect.), pp. 



26-27. 

 Hoppe, Edmund. Ueber die Bestimmung der 



Haupt- und Brennpunkte eines Linsensystems. 



Annal. Phys. Chem. 160, 1877, pp. 169-173. 

 2. Mittheilung aus einer Experimental- 



untersuchung betreffend den Leitungswiderstand 



der Flammen gegen den galvanischen Strom. 



Gottingen, Nachrichten, 1877, pp. 313-319; 



Annal. Phys. Chem., 2, 1877, pp. 83-94. 



3. Mittheilung iiber die Pyroelectricitat 



des Turmalins. Gottingen, Nachrichten, 1877, 



pp. 474-492. 

 Hoppe, Oskar. Beobachtungen der Warme in 



der Bliithenscheide einer Colocasia odora (Arum 



cordifolium). Acad. Nat. Curios. Nova Acta, 



41 (Pars 1), 1879, pp. 197-252. 

 Hoppe, Reinold. 57. Principien der analyt- 



ischen Curventheorie. Archiv Math. Phys., 56, 



1874, pp. 41-84. 



58. Construction der reellen Wurzeln 



einer Gleichung 4. oder 3. Grades mittelst einer 

 festen Parabel. Archiv Math. Phys., 56, 1874, 

 pp. 110-112. 



59. Zum Problem des dreifach ortho- 



gonalen Flachensystems. [Fortsetz.] Archiv Math. 

 Phys., 56, 1874, pp. 153-162, 250-266; 57, 



1875, pp. 89-106, 255-276, 366-384; 58, 1876, 

 pp. 37-48. 



60. Bemerkung iiber C. BENDER'S Aufsatz 



iiber die " Bestimmung der grossten Anzahl 

 gleich grosser Kugeln, welche sich auf eine 

 Kugel von demselben Radius, wie die iibrigen, 

 auflegen lassen." Archiv Math. Phys., 56, 1874, 

 pp. 302-312. 

 61. Inhalt des Sechsflachs zwischen ortho- 



