viii CONTENTS. 
XVIII. Obferuatiqns on a particular Mamier of En^ 
creafe in the Animaktila of vegetable Infujiom^ 'ivitb 
the Difcovery of an indijjhluble Salt a?ifng prom 
llemp-j'eed put into Water till it becomes putrid. 
jB;' J ohn Ellis, F.R.S. p. 138 . 
XIX. On the Computation of the Suns Eifance from 
the Earth, by the Theory of Gravity : In a Letter to 
Mathew Maty, M. D. Sec.R. S. from the Rev. 
Mr. Horfley, F. R. S. P* M 3 
XX. Meteorological Obfervatiojis for 1768, made at 
Bridgwater in Somerfetfliire, and at Liidgvan in 
Mount’s- Bay, Cornwall. Communicated by Dr. 
Jeremiah Milks, Dean op Exeter, and F. R. S. 
. . - P- M 5 
XXI. Fropofalof a Method for fecuring the Cathedral 
of St. Paul’s from Damage by Lightning ; in confe- 
quence of a Letter prom the Dean and Chapter of 
^t. Paul’s to James Weft, Ep'qidre, Pr. R. S, 
p. 160 
XXII. Ohfervation of the late Tranft Venus ; In a 
Letter to James Burrow, EJquire, V. P. R.S. By 
Mr. James Plorsfall, F. R. S. p. j 70 
XXIII. An Account op the Obfervations of the Tranf t 
of Venus and of the Eclipfe of the Sun, made at 
Shirburn Caftlc and at Oxford. By the Reverend 
Thomas Hornfby, M.A.F.R.S. a?id Savilian 
Profefbr of Afronomy hi the Univerfty of Oxford. 
p. 172 
XXIV. Y tx\m obferved upon the at Oxford, June3, 
1769: By Samuel Horfley, LL.B. Redlor of 
St. Mary, Newington, in Surrey, F.R.S. p. 183 
XXV. Obfervations of the lafl Tranft of Venus, 
and of the Eclipfe of the Sun the next Day ; 
made 
