Moork — Solar Halos seen at Grey stones (Wicklow), Texas, Ohio. 541 



the most distinct of all, but was scarcely more distinct than the X-shaped 

 area J. The figure as shown represents the phenomenon in its most glorious 

 stage- It was, of course, constantly changing. 



" My observations and the field-sketch were checked and verified by 

 Dr. Tipton, of Gallia." 



MOCK 

 5U 



From a drawing on a tennis-ball (inscribed, "9.45 a.m. Greystones, 22nd Sept. '79. R. S. B."), 

 as interpreted by Mr. Thomas Mason, Dame Street, Dublin. 



My attention was at once arrested by the illustrations of these unusual 

 halos, for I remembered that a certain historic and classical tennis-ball had 

 been in my possession and treasured for as many as thirty-eight years. On 

 it, in the autumn of 1879, my friend, the late Sir Eobert Stawell Ball, had 



