454 NOTES AND REFERENCES. 



PAGE 



9. HERSCHEL'S Discourse, p. 93 . 



AMPERE, Theorie des Phe'nomenes Electro-dynamiques, Me- 

 moirs in the Ann. de Chimie et de Physique, and works from 

 1820 to 1826, Paris. 



15. LAMARCK, Sur la Matiere du Son (Journal de Physique, vol. 

 xlix. p. 397). 



17. BABBAGE, On the Permanent Impression of our Words and 

 Actions on the Globe we inhabit, gth Bridgewater Treatise, 

 ch. ix. 



20. MAYER, Annalen der Pharmacie Liebig und Wohler, May 1852. 



RANKINE, Measure of Moving Force. (The Engineer, October 

 26, 1866). 



22. JOULE, On the Mechanical Equivalent of Heat (Phil. Trans. 

 1850, p. 61). 



ERMAN, Influence of Friction upon Thermo-electricity (Reports 

 of the British Association, 1845). 



24. BECQUEREL, De'gagement de PElectricite' par Frottement, Traite 



de TElectricite, torn. ii. p. 113, et seq. 



25. SULLIVAN, Currents produced by the Vibration of Metals (Archiv. 



de TElectricite, t. 10, p. 480). LEROUX, Vibrations Arrested 

 Produce Heat (Cosmos, March 30, 1860). 



Mr. B. STEWART considers that the radiant forces are not pro- 

 duced directly by visible energy, by which I presume he means 

 motion. The difference is perhaps one of terms. Arrested mo- 

 tion produces heat in the body stopped, and this heat radiates. 

 It may be doubtful if this radiant heat should be said to be a 

 direct or intermediate result. (See B. STEWART, Conservation 

 of Energy, p. 105). 



26. WHEATSTONE, On the Prismatic Decomposition of Electrical 



Light (Notices of Communications to the British Association, 

 P- IJ > l8 35-) 



27. BACON, De Forma Calidi, Nov. Org. book ii. aph. 20. 



RUMFORD, An Enquiry concerning the Source of Heat which is 

 excited by Friction (Phil. Trans., p. 80, 1798). 



DAVY, On the Conversion of Ice into Water by Friction (West of 

 England Contributions, p. 16). 



Of Heat or Calorific Repulsion (Elements of Chemical Philo- 

 sophy, p. 69). 



