NOTES AND REFERENCES. 457 



'AGE 



60. SEGUIN, Influence des Chemins de Fer, p. 378 et seq. 



6 1. JOULE and THOMSON, On the Thermal Effects of Fluids in 



Motion (Phil. Trans. 1854, p. 338). 



64. ROGERS, Consumption of Coal for Man-power (Cosmos, vol. ii. 



p. 56). 



67. MEYER and WATERSTON have suggested that solar heat may 



arise from the mechanical action of meteoric stones falling into 

 the sun, and Mr. THOMPSON has written an elaborate paper 

 on the subject (Trans. Brit. Assoc. 1853). If a number of 

 gravitating bodies exist in the neighbourhood of the sun, and 

 form, as is conjectured, the zodiacal light, it is difficult to 

 conceive how comets, as they approach this region, steer 

 clear of such bodies, and are not even deflected from their 

 orbits. 



For Mr. THOMPSON'S various and valuable papers, see Phil. Mag. 

 passim. B. STEWART, Conservation of Energy, p. 153. 



68. POISSON, Comptes rendus, Paris, January 30, 1837. 



69. WILLIAMS, MATTIEU, On the Fuel of the Sun. 



71. DUFAYE, SYMMER, WATSON, and FRANKLIN, Theories of Elec- 



tric Fluid and Electric Fluids (Priestley's History of Electri- 

 city, pp. 429-441). 



GROTTHUS, Sur la Decomposition de 1'Eau et des Corps qu'elle 

 tient en dissolution a aide de PElectricite Galvanique (Ann. de 

 Chimie, torn. Iviii. p. 54). 



72. FARADAY, On the Question whether Electrolytes Conduct with- 



out Decomposition (Proceedings of the Weekly Meetings of 

 the Royal Institution, 1855). 



GROVE, Comptes rendus, Paris, 1839. 



FARADAY, On Induction as an Action of Contiguous Particles 

 (Phil. Trans. 1838, p. 30). 



MATTEUCCI, Plates of Mica Polarised by Electricity (De la Rive's 

 Electricity, p. 140). 



73. GROVE, Experimental Investigations, 415. 



KARSTEN on Electrical Figures (Archiv. de 1'Elec., vols. ii. iii. 

 and iv.) 



74. GROVE, Etching Electrical Figures and Transferring them to Col- 



lodion (Experimental Investigations, p. 402). 



