INDEX TO ARTICLES. 375 



Improvement in the manufacture of malleable iron. Chem. Gaz., 327. 



Improvement in high-pressure steam-engines and locomotives. Kemond. Moniteur 

 lodustriel. 



Instruments, mathematical. Romershausens. I'oiy. Jour., No. 6i:i 



Locomotivea iu motion, stability of. Lechatelier. C. R., Jan. 29. 



" balancing disturbance of. Lechatelier. Eisenbahn Zeitung. 



Machine for washing yarn. 15ul. elf la Sue. d'En., March. 



Manufacture of anthracite iron in U. S. Jour, of F. 1., June. 

 " of soda, products of. Brown. Brewster, Jan. 



Measuring instruments. Schlagentweit. Poly. Jour., No. 635, 636. 



Paper, process for splitting. Civ. Eng. and Arch. Jour., Feb. 



Parabolic propeller, Hodgson's. Jour, of F. I., March. 



1'olar clock, Wheutstone's, perfected by Soleil. C. R., April 16. 



Process for smelting copper. Rivot and Phillips. Jour, of F. I., Jan. 



Railway girders, deflection and strain of. Jour of F. I., Feb. and March. 



Removal of rocks under water by explosive means. Poly. Jour., No. 634. 



Strength of materials iu iron bridges. Jour, of F. I., April. 



Stability of locomotives in motion. Lechatelier. C. R., Jan. 29. 



Steam-engines, experiments on. Regnault. Jour, of F. I., Jan., Feb., and March. 

 " high-pressure. Albans. Poly. Jour., No. 625-627, 631-634, C3U, 642. 



Use of gunpowder under water. Poly. Joui\, No. 630. 



Ventilator for mines, Stnive's. Min. Jour., March 20. 



Wood, carbonization of, by steam, with a description of an apparatus. Violette. Jour, 

 of F. 1., April. 



Yarn, machine for washing. Bresson. Bui. de la Soc. d'En., March. 



NATURAL PHILOSOPHY. 



Application of the galvanic current to the astronomical clock and telegraph register. 

 Walker. Sill., March. 



Arc, voltaic. Matteuci. C. R., Sept. 3. Brewster, Oct. 



Aurora Borealis. Secchi. Am. Ass., p. 2. 



Bars, Trevelyan's vibration of, by the magnetic current. Page. Sill., Jan. 1850. 



Cholera, supposed connection of electricity with. Hare. Am. Ass., p. 201. 



Classification of colors. Forbes. Brewster, March. 



Colored rings of Newton. Provostaye and Desains. C. R., Feb. 19. 



Diamagnetism, experiments on. CErsted. Sill., March. 



Dispersion of light. Hunt. Sill., May. 



Diurnal variations of the magnetic needle. De la Rive. Ann. de C. et de P., Vol. 25, 

 p. 310. 



Effects of the surrounding media on voltaic ignition. Grove. Phil. Trans., Part I. 



Electrical currents, spontaneous in the wires of the electro-telegraph. Baa-low. Phil. 

 Trans., Part I. 



Electricity, propagation of, in solid non-conducting bodies. Matteuci. Ann. de C. et de 

 P., Oct. 



Electricity developed by muscular contraction. Despretz and Becquerel. C. R., May 

 28. Brewster, July. 



Electricity of a plate of zinc buried in the earth. Loomis. Am. Ass., p. 196. 

 supposed connection of, with cholera. Hare. Am. Ass., p. 201. 



Electro-physiology, new researches in. Matteuci. C. R., April 30. 



Electro-telegraphic systems of England, Prussia and America. Whishaw. Ath., Sept. 22. 



Experiments on diamagnetism. CErsted. Sill., March. 



Formation of clouds. C. R., March 5. 



Galvanic current, application of, to the astronomical clock and telegraph register. 

 Walker. Sill., March. 



Galvani, electro-physiological studies of. Ann. de C. et de P., Vol. 25, p. 58. 



Iron and its metallic products, magnetic power of. Delesse. C. R., Jan. 8, Feb. 12, 

 April 2. 



Light, dispersion of. Hunt. Sill., May. 



" reflection and refraction of, and'some new rays. Cauchy. C. R., Jan. 15. 

 " reflection of, from the surface of transparent bodies. C. R., Jan. 22. 



Magnetic power of iron and its metallic products. Delesse. C. R., Jan. 8, Feb. 12, 

 April 2. 



Magnetic needle, diurnal variations of. De la Rive. Ann. de C. et de P., Vol. 25, p. 

 310. 



Magnetism of steam. Brewster, Supplement to Vol. 34. 



Multiple sounds of bodies. Duhamel. Ann. de C. et de P., Jan. 



Muscular conirariiou, electricity developed by. Despretz and Becquerel. C. R., May 

 28. Brewster, July. 



Phenomena of vision with the two eyes. Foucault and Regnault. C. R., Jan. 15. 



