1888 .] Mr Peddie on the Electric Resistance of Liquids. 259 
7. Preliminary Note on New Determinations of the Elec- 
tric Resistance of Liquids. By W. Peddie, B.Sc. 
{Abstract.) 
In this paper Mr Peddie described some preliminary experi- 
ments made on the resistance of dilute solutions of sulphuric acid 
(ordinary commercial). The solution is enclosed in a glass tube, 
which passes through a metal vessel containing water. Each end of 
the tube dips into a separate vessel containing some of the acid 
solution, and a platinum electrode is placed in each vessel. This 
apparatus is joined in circuit with a Helmholtz tangent galvano- 
meter and a Brush dynamo. The current from the dynamo is then 
passed through the arrangement, and the water surrounding the 
tube is stirred constantly until its temperature ceases to rise. The 
temperature of the water, the temperature of the air, and the 
current strength are then noted, and the resistance is obtained by 
the application of Joule’s Law, the rate of loss of heat being known. 
This method avoids the difficulties of polarisation and transi- 
tion resistance. The results already obtained agree roughly with 
Kohlrausch’s determinations. A full series of experiments will be 
made, and the results will be communicated to the Society. 
8. Notice of the Recent Earthquake in Scotland, with 
Observations on those since 1882. By Charles A. 
Stevenson, B.Sc., Assoc. M. Inst. C.E. (Plate V.) 
In 1880 a rather sharp shock of earthquake was felt in Scotland, 
an account of which I communicated to this Society. Since then 
seven shocks have been felt in Scotland, and a notice of them, 
especially of the last, which occurred this year, will, I hope, be of 
interest to the Society. 
On 8th April 1882, the lightkeepers at Phladda Island reported 
that “at 7.37 p.m. a sudden shock of an earthquake passed the 
island from west to east, approaching with wave-like motion, dying 
away with a noise like distant thunder, lasting about three seconds. 
It was felt in the neighbouring islands.” 
