C Vi ] 
VIII. Demonstrations of the late Dr. Maskelyne’s formulcefor 
finding the longitude and latitude of a celestial object from its 
right ascension and declination ; and j or finding its right ascen- 
sion and declination from its longitude and latitude , the obli- 
quity of the ecliptic being given in both cases. By the Rev , 
Abram Robertson, D.D. F.R.S. Savilian Professor of 
Astronomy in the University of Oxford , and Radclijfian Ob- 
server. Communicated by the Right Honourable Sir Joseph 
Banks, Bart. G.C.B. P.R.S. p. 138 
IX. Some account of the feet of those animals whose progressive 
motion can be earned on in opposition to gravity. By Sir 
Everard Home, Bart . V. P. R. S. p. 149 
X. On the communication of the structure of doubly refracting 
crystals to glass , muriate of soda , fluor spar , and other sub- 
stances, by mechanical compression and dilatation. By David 
Brewster, LL.D. F.R.S. Bond, and Fdin. In a letter 
addressed to the Right Hon. Sir Joseph Banks, Bart. G.C.B. 
P-R^S . p, 15(5 
APPENDIX. 
Meteorological Journal kept at the Apartments of the Royal 
Society, by Order of the President and Council . 
