I 
SCIENTIFIC COMMUNICATIONS 
RECEIVED AT 
,THE SOCIETY’S MEETINGS. 
March, 1830»—On the recent appearances of Aurora Borealis: 
by W. Marshall, F. G. S. 
On the ancient Dikes at Huggate, on the Wolds of Yorkshire: 
by the Rev. T. Rankin. 
On some Geological Phenomena in Caermarthenshire: by Mr. 
Price. 
On an ancient Seal, in the possession of the Society: by 
Michael Jones, Esq. F. S. A. 
On the supposed Footprints of Quadrupeds on the Sandstone rock 
of Dumfriesshire: by H. Witham, Esq. F. G. S. 
April. —-On a crystallized Oxide of Zinc, procured from the 
Zinc Works at Filisur, in the Grisons —on the colouring matter 
1 Phil. Mag, and Annals, June 1830. 
E 2 
