PROCEEDINGS OF 



THE ROYAL SOCIETY. 



YOL. Lxvr. 



No. 429. 



Meetings of March 22 and March 29, 1900 

 List of Papers read 



PAOB 



268 



269 



Thermal Eadiation in Absolute Measure. By J. T. Bottomley, M.A., P.Sc, 



F.R.S., and J. C. Bbattie, D.Sc, F.E.S.E 269 



Photography of Sound-wave^, and the Kinemato graphic Demonstration of 

 the Evolutions of Eeflected "Wave-fronts. By R. W. Wood, Assistant 

 Professor of Physics in the University of Wisconsin. Communicated by 



C. V. Boys, F.B.S 283 



Folytremaeis and the Ancestry of Helioporidae. By Professor J. W. Gebgoey, 



D. Sc. Communicated by Professor Ray Lankestee, F.R.S. (Plate 2) . 291 



On the Structure of Coccospheres and the Origin of Coccoliths. By Heney 

 H. Dixon, Sc.D., Assistant to the Professor of Botany, Trinity College, 

 Dublin. Communicated by J. Joly, F.R.S., Professor of Geology, 



Data for the Problem of Evolution in Man. IV. IS'ote on the Effect of Fer- 

 tility depending on Homogamy. By Kael Peaeson, F.R.S., University 



Trinity College, Dublin (Plate 3) 



305 



College, London 



316 



Price Tliree Shillings, 



May 12, 1900. 



