— CCXII — 



S. Tolver Pn'slon. Tlie Pioblom of the Boliaviour of tlie Ma- 

 gnetic Ficld about a Hevolving Magnet. — J. Sivinburne. Al- 

 ternate Current-Condenser?. — H. M. Vervon. On the so-called 

 Mcta-Elements. — S. P. Thompson. On tlie Use of Fluor-Spaz 

 in Optical Instiuments. — E. L. Nichols. On the Alteniating 

 Electric Are between a Ball and Point. — J. J. Tltonison. Con- 

 ductivity of Hot Gases. — Shelford Bidiceìl. A Lecture Expe- 

 riment illustrating the Ellcct of Heat npon the Magnetic Su- 

 sceptibility of Nickel. 



London (The), Edinburgh and Duhlin Philosophiccd Ma- 

 ga zine and Journal of Science. - Voi. 31, n. 190. 

 - March 1891. 



/. J. Tlwìiison. Oa the lUustration of the Properties of the Elec- 

 tric Field by Means of Tubcs of Electroslatic Induction. — E. 

 lerlicr. On the Measurement of Dielectric Constants by incans 

 of Hertz Oscillations. — II. Lavib. On tho Flexure of a Fiat 

 Elastic Spring. — E, B. Rosa. Spccific Inductive Capacity of 

 Electrolytes. — G. M. Mivchin. Experiments in Photoelectri- 

 city. — A/. Carey Lea. On Gold-coloured Allotropie Silver. — 

 iShelford Bidwell. Some Experiments with Seieniuin Cells. — 

 A. A. Michelsoìi. Visibility of Interference. — Fringes in the 

 Focus of a Telescope. — /. Me. Cowun On the Healing of Con- 

 ductors by Electric Currents, and on the Electric Dislribution 

 in Conductors so heated. — A. Scltuater. The Inlluence ofthe 

 Bending of Magnetic Needlcs on the apparent Magnetic Dipp. 



^'Lumière (La) èlectrique. - Journal iiniver.sel d' élec- 

 ti-icité. - T. 38, n. 33-52, T. 39, n. 1-12. - Paris, 

 1890-91. 



^'MagneliacÌLC and Mctcoi-ologische Bcohacìituiigcn an 

 der K, K. Sternwarte zu Prag ini Jahre 188 U. - 

 50 Jalu'g-. - Prag, 1890. 



