" ■ *- — — — — ' ' — 
CONT EN TS 
O F 
VOL. LXXII. Part 11. 
XIX. AfN Attempt to make a Thermometer for mea faring the 
higher Degrees of Heat , from a red ITeat up to the 
■ frongcf that Ft efels made of Clay can fupport. By Jofiah 
Wedgwood; communicated by Sir Jofeph Banks, Bart. 
- P • R* S. Page 305 
XX. An Analyjts of Two Mineral Sulfances , viz. the Rowley- 
rag-ftone and the Toad-ldone. By William Withering, 
M. D. ; commuicated by Jofeph Prieftley, LL . D. F. R . S . 
to Sir Jofeph Banks, Bart , P. R. S. P* 3 2 7 
XXI. New Fundamental Experiments upon the Collijion of 
Bodies . By Mr, John Smeaton, F. R. S. in a Letter to Sir 
Jofeph Banks, Bart . P. R. S. P-337 
XXII. Proceedings relative to the Accident by Lightning at 
Heckingham. p. 33- 
XXIII. Account of the Organ of Hearing in Fijh. By John 
Hunter, Efq, F. R. S, P-379 
XXIV. Account of a new FJeflrometer . By Mr. Abraham 
Brook ; communicated by Sir Jofeph Banks, Bart. P. R. S. 
p. 384 
R r 2 XXVIII. A 
