C Vi ] 
VIII. On Irregularities observed in the direction of the Compass 
Needles of H. M. S . Isabella and Alexander , in their late 
Voyage of Discovery , and caused by the attraction of the iron 
contained in the Ships. By Captain Edward Sabine, of the 
Royal Regiment of Artillery , F. R. S. &c. p. 1 12 
IX. Some observations on the formation of Mists in particular 
situations. By Sir H. Davy, Bart. F. R. S. V. P. R. I. p. 1^3 
X. Observations on the Dip and Variation of the Magnetic Needle , 
and on the Intensity of the Magnetic Force ; made during the 
late voyage in search of a North West Passage. By Captain 
Edward Sabine, of the Royal Regiment of Artillery, F. R. S. 
and F. L. S. 132 
XI. On the action of crystallized surfaces upon light. By David 
Brewster, LL. D. F. R. S. Lond. and Edin. In a letter 
addressed to the Right Hon. Sir Joseph Banks, Bart. G. C. B. 
P. R. S. p. 145 
Meteorological Journal for 1818, kept at the Apartments of the 
Royal Society. 
