CON 
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VOL. LXXL 
13 
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XV. 71 7* E W Experiments upon Gun-powder, with occafona! 
™ Obfervations and practical (Infer encH , to which are 
added i an Account of a new Method of determining the Veio & 
cities of all Kinds of Military ProjeCiiles^ and the Defer ip ~ 
tion of a very accurate Epr olivette for Gun -powder. By 
Benjamin Thompfon, Efq , F. R. S. Page 230 
XVI. Account of a luminous Appearance in the Heavens. By 
Mr. Tiberius Cavallo, F. R. S. in a Letter to Sir Jofeph 
Banks, Bart. P. R. S. p. 329 
XVII. Account of an Earthquake at Hafodunos near Denbigh. 
By John Lloyd, Efq. F. R. S. in a Letter to Sir Jofeph 
Banks, Bart. P . R. S. p. 3 31 
XVIII. On the Heat of the Water in the Gulf f ream. By Charles 
Blagden, M. D . Phyfician to the Army , F. R. S. p. 334 
XIX. Account of the Appearance of the Soil at opening a Well at 
Hanby in Lincolnfhire. In a Letter from Sir Henry C. 
Englefield, Bart, 1 F* R. and A. S. to Sir Jofeph Banks, 
Bart. P. R. S. p* 345 
XX. Agronomical Obfervations made by Nathaniel Pigott, .Efq. 
F. R. S. Foreign Member of the Academies of Brufiels and 
Caen, and Correfpondent of the Academy of Sciences at Paris. 
Communicated by Sir Henry C. Englefield, Bart. F. R. 
and A. S. p. 347 
XXI. AbfraCl of a Regifter of the Barometer , Fhermorneter , 
and Rain , at Lyndon, in Rutland, 1780, By Thomas 
Barker, Efq . p. 34 1 
XXII. 
