— cxnvr — 

 Journal des économisles, etc. - Paris, avril 1881. 



G. De Molinari. La Russie et la Nihilisme. — G. chi Puynode. La 

 crise financière de V ancien regime. — Ad. F. de Fontpertuis, 

 Études sur 1' Amérique latine. Le Biesil. — M. Block. Revue des 

 pi incipales publicatioiis économiques de 1' étrangei;. 



* Journal di' liygiène, climatologie., etc, piiblié par le doct. 

 P. De Pietra Santa. - VI année, VI voi., n. 236-240. - 

 Paris, 4 881. 



London (The), Ldinburyh and Duldin Philosophical ]\]agazine 

 and Journal of science. - Voi. XI, n. 68. - London, 

 Aprili 881. 



/. /. Thomson. On the Electric and Magnetic Effects produced by the 

 Motion of Electrificd Bodies. — P. Challis. Tlieoretical Explana- 

 tions of the Rectilinear Transmission and Spontaneous Diffusion 

 of Sound and Light. — H. A. Rovìland. On the nevv Theory of Ma- 

 gnetic Attractìons, and the Magnetic Relation of Polanzed Light. 



— C. R. Alder Wright. On the Determination of Chein,ical Afflnity 

 im terms of Electromoctive Force. — H. Hennessy. On the Fi- 

 gures of the Planels. — S. P. Thompson. On the Construction of 

 the Photophone. — R. T. Glazebrook. On the Measureinent of 

 Small Resistauces. — W. Chandler Roberts. Determination of 

 the Density of Fluid Bismuth by nieans of the Ojicosimeter. — 

 C. Abtiey. On Lines in the Infra-red Region of the Solar Spe- 

 ctruni. — Shelford Bidivell. The Effect of Temperature upon the 

 Electrical Resistance of Selenium. 



*Mémoires de la Société de physiqiie et </' hiHoire naturelle 

 de Genève. - T. XXVIl, 1 partie. - Genève, i880. 



/. E. Duby. Choix de Mousses exotiques nouvelles ou mal connues. 



— C. Cellerier. Nouveau mode de discussion de la prop.igation du 

 mouvement dans un milieu élastique. — Monographie des Echi- 

 nides contenus dans les «ouches nummulitiques de 1' Egypte. 



*Memoirs of the Literary and Philosophical Society of Man- 

 chester. - Voi. VI. - 4 879. 



Rooke Pennington. A Desceni into Elden Hole, Derbyshire. — A. W. 

 Waters. Certain Lines observed in Snow Cryslals. — Inquiries 



