OF THE SMITHSONIAN INSTITUTION. 41 



284. Report for 1868— Continued. 



Henry, J. Appendix to notice of Schcenbein. 



Hagen, G. Memoir of Eneke. 



Kaavson, K. Memoir of Eaton Hodgkinson. 



Cazin, a. Recent progress in relation to the theory of heat. 



MuLLER, J. Principles of the mechanical theory of heat. 



Magkixi, L. ContinuoiLS vibratory movement of all matter, ponderable 

 and imponderable. 



Tyndall, J. Radiation. 



Daitbree, M. Synthetic experiments relative to meteorites. 



Brush, G. J. Catalogue of meteorites in the mineralogical collection of 

 Yale College. 



De Saussure, H. Observations on the electric resonance of mountains. 



Stewart, B. Experiments on aneroid barometers made at the Kew Ob- 

 servatory. 



Ellery, R. L. J. Address of the president of the Royal Society of Vic- 

 toria. 



Wartmann, E. Report on the transactions of the Society of Physics 

 and Natural History of Geneva, from July, 1867, to June, 1868. 



Broca, p. History of the transactions of the Anthropological Society 

 of Paris, from 1865 to 1867. 



Rau, C. Drilling in stone without metal. 



Rati, C. Agricultural flint implements in southern Illinois. 



Notice of the Blackmore Museum, Salisbury, England. 



Prize Quejstions : 



Holland Society of Sciences of Harlem. 



Imperial Academj' of Sciences, Belles Lettres, and Arts, of Bordeaux. 

 .Pollock, J. Assay of gold and silver coins at the Mint of the United 

 States. 



Table of foreign gold and silver coins. 



List of publications of the Smithsonian Institution up to July, 1869, with 

 systematic and alphabetical index. 



225. List of Foreigu Correspondeuts of the Smithsonian Institution ; cor- 



rected to January, 1870. April, 1870. 8vo., pp. 56. 



226. A List of the Smithsonian Publications, from 1846 to 1869. Novem- 



ber, 1869. 8vo., pp. 34. 



227. Arrangement of the Families of Mollusks. By Theodore Gill. 



February, 1871. 8vo., pp. Go. (M. C. x.) 



228. Annual Report of the Board of Regents of the Smithsonian Institu- 



tion, for the year 1869. 41st Congress, 3d Session. House of Rep- 

 resentatives, Ex. Doc. No. 153. 1871. 8vo., pp. 430,38 woodcuts,. 

 1 map. 



contents. 



Henry, J. Secretary's report of operations. 



Board of Regents, Proceedings of 



List of meteorological stations and observers. 



List of meteorological material contributed to Smithsonian Institution. 



