; radiation is maintained. In a paper by J. Homer Lan^ 



le Theoretical Temperature of the Sun, Ac., publiaht^l i 



Journal, July, 1869, it is elaborately argued, and art* .r 



sviccessfully maintained, that the great rapidity of cin i 



loii required by this theory cannot subsist conaistajllv w :; 



• received laws of gaseous circulation. Quite recently aiiotht 



^>rv of the sun's physical constitution has been propoumltN 



Professor F. Zdlfner of Leipzig; based mainly on the ».; 



'Iished fact that the solar protuberances, cons|)i(Mious]v v.>i 



II total eclipses, and obser\'able at all times with tin -.iti o 



'.troscope, are most of them due to violent .niptKn- o 



- - of incandew^nt hydrogen.* He remark? tliat 'it > m 



•Journal of the Franklin InsI 



