CONTENTS. 
ii 
Art. XI. Observations on the Resistance of Fluids. By Wil- 
liam Watts, Esq. - - SI 5 
XII. Description and Use of a very Sensible Electrome- 
ter, for indicating the Kind of Electricity which 
is applied to it. By Professor Bohnenberger, S24 
XIII. Observations on the Countries of Congo and Loango 
as in 1790 . By Mr Maxwell, Author of the 
Letters to Mungo Park, &c. &c. - 327 
XIV. On the Method of finding the Dip or Depression of 
the Horizon. By Adam Anderson, A. M. F.R.S.E. 331 
XV. On certain remarkable instances of deviation from 
Newton’s Scale in the Tints developed by Crystals 
with one Axis of Double Refraction, on exposure 
to Polarized Light. By J. F. W. Herschel, A. M. 
F. R. S. Loud. & Edin. and of the Cambridge Phi- 
losphical Society, - - S34 
XVI, On the Antiseptic Power of the Pyrolignous Acid 
upon Fresh Meat. By J. Stanley, M. D. 344 
XVII. Notice of the Voyage of Mr Edward Barnsfield, Mas- 
ter of his Majesty’s Ship Andromache, to New 
South Shetland, - - 345 
XVIII. Observations on the Diurnal Variation of the Needle 
from 1775 to 1780, at Zwanenburg in Holland, 348 
XIX. Notice regarding the Working and Polishing of Gra- 
nite in India. By Alexander Kennedy, M. D. 
F.H. S. Edin. - - - 349 
XX. Account of the Native Hydrate of Magnesia, disco- 
covered by Dr Hibbert in Shetland. By David 
Brewster, LL. D. F. R. S. Lond. & Sec. R. S. Ed. 352 
' XXL Experiments on the Going of a Clock with a Wooden 
Pendulum. By Colonel Beaufoy, Fb R. S, &c, &c. 355 
' XXIL Account of the Establishment of a Scientific Prize by 
the late Alexander Keith, Esq. of Dunottar, 358 
XXIII. Description of a Magnetimeter, being a New Instru- 
ment for Measuring Magnetic Attractions, and 
Finding the Dip of the Needle ; with an Account 
of Experiments made with it. By William 
ScoresbY, Esq. jmw. F. R. S. E. M. W. S. &c. 360 
XXIV. Notice respecting Professor Hansteen’s Chart of the 
Variation and Dip of the Needle, - 363 
XXV. Account of a Remarkable Shower of Hail which fell 
in Orkney on the 24th of July 1818. By Patrick 
Neill, F. R, S. E. F. L. S. &. Sec* Wern. Soc. 365 
