Intelligence and Miscellaneous Articles. 311 
lities having been fully treated of, the Permian fossils of South York- 
shire were compared, first, with those of Durham; next, with those 
of Lancashire; and thirdly, with those of Ireland. Remarks on the 
distribution of the Permian Fauna in time concluded the paper. 
XLVIII. Intelligence and Miscellaneous Articles. 
SOME RESULTS IN ELECTRO-MAGNETISM OBTAINED WITH THE. 
BALANCE GALVANOMETER. BY GEORGE BLAIR, M.A. 
GINCE bringing the balance galvanometer, along with some other 
apparatus, before the Society in the course of last session, the 
writer had made some experiments with this new galvanometer, which 
led to results that he did not anticipate, and which he considered to 
be of sufficient importance to justify him in presenting them to the 
Society. The object originally aimed at in its construction was to 
obtain an exact measure, by weight, of the actual amount of deflective 
force which the current exerts upon the magnetic needle. The in- 
strument constructed for this purpose is represented in fig. 1. The 
