THE 



SCIENTIFIC PROCEEDINGS 



OF THE 



ROYAL DUBLIN SOCIETY. 



Vol. XV. (U.S.), JTo. 38. APRIL, 1919. 



SOLAR HALOS SEEN AT GREYSTONES, CO. 

 WICKLOW, ON SEPTEMBER 22nd, 1879 ; AND 

 IN TEXAS AND OHIO, U.S.A., ON OCTOBER 

 3rd, 1917. ^r^- 



by ( JUN 15 192 



SIR JOHN MOORE, M.A., M.D., D.Sc, F.R, Met. Soc. 



(PLATE L.) 



[>4 uthors alone are responsible for all opinions expressed in their Communications.^ 



DUBLIN : 



PUBLISHED BY THE ROYAL DUBLIN SOCIETY, 



LEINSTER HODSE, DUBLIN. 



WILLIAMS AND NORGATE, 



14, HENRIETTA STREET, COVENT GARDEN, LONDON, W.C. 



1919. 



Price Sixpence. 



