f64 Proceedings of the Royal Society of Edinburgh. 
On the same evening, a paper by Captain Scoresby junior- 
was read, entitled, “ Observations on the Errors in the Sea- 
Rates of Chi onometers., arising from the Magnetism of their 
Balances; with suggestions for removing this Source of Error P 
In this paper, Mr Scoresby suggests three means of lessening or 
obviating altogether the anomalous action of the Magnetism of 
the balance. 
It To employ a substance in the construction of the balance 
without magnetical properties. 
S.' To free the balance of any magnetism accidentally ac- 
quired. 
Ss To prevent the unequal action of the magnetic influence, 
by giving to the chronometer a fixed position, as re- 
gards the magnetic meridian. 
In order to apply the first method, he proposes to make the ba- 
lance of platinum. In order to accomplish the second object, 
he suggests that the flat surface of the balance be ground and 
polished in the plane of the magnetic equator. To effect the 
third object, he makes the chronometer traverse upon the plate 
, of a compass-needle ; and he has found this contrivance quite 
practicable, the magnet which directs the plate being at such a 
distance as not to affect the chronometer. 
May 6. A paper was read, containing a series of Electro- 
magnetic Experiments and Observations, by T. S. Traill, 
M. D. and Captain William Scoresby. 
May 20. An account of the Analyses of the Faroe Apophyl- 
lites, and other minerals, by M. Berzelius, was read, and also 
Observations on this paper, and on the Optical Analysis of Mi- 
nerals, by Dr Brewster. These two papers are printed in this 
Number, p. 1. and 11. 
June The following gentlemen were elected Members of 
the Society : 
Foreign. 
Baron Larrey. 
Ordinary. 
James South, Esq. F. R. S. Geo. Jos. Bell, Esq. Prof, of Scots Law; 
Lieutenant-Colonel Martin Whyte. Dr William Dyce, Aberdeen. 
W. F. Campbell, Esq. of Shawfield, M. P. W. C. Trevelyan, Esq. 
At the same meeting, a paper by Henry Mackenzie, Esq. 
