VI 
CONTENTS. 
cival, M. D. F. R. S. and S. A. Communicated 
by the Rev. Dr. Price. p. 54 
VI. Obfervations on the Bill of Mortality , in Chefter, 
for the Tear 1772. By L. Haygarth, M. D. p. 67 
VII. EleCtrical Experiments by Mr. Edward Nairne, 
^London, Mathematical Inflrument - maker, made 
with a Machine of his own Workmanfhip , a De- 
fer ipt ion of which is prefixed. P- 79 
VIII. On the noxious Quality of the Efiluvia of putrid 
Marjhes. A Letter from the Rev. Jofeph Prieftley, 
LL.D. F.R.S 0 to Sir John Pringle. p. 90 
IX. Farther Proofs of the Infalubrity of marfhy Situ- 
ations , by the Rev. Richard Price, D. D. F. R. S. 
in a Letter to the Rev. Dr. Horfley. p. 96 
X. Of the Culture and Ufes of the Son or Sun -plant, 
of Hindoftan, with an Account of the manner of 
manufacturing the Hindoftan Paper. By Lieu- 
tenant Colonel Ironfide. Communicated by Dr. He- 
berden. p. 99 
XI. An Improvement propofed in the crofs JVires of 
Telefccpes , by A. Wilfon, M. D. Profefi'or of Prac- 
tical Afironomy in the Vniverfity of Glal'gow. In a 
Letter to the Afironomer Royal. p. 105 
XII. The Cafe of a Patient voiding Stones through a 
fifiulous Sore in the Lows , without any concomitant 
Difcharge of Urine by the fame Paffage : In a 
Letter to Dr. Maty, from Mr. S. F. Simmons. 
p. 10S 
XIII. The Difparition of Saturn’s Ring , obferved by 
Jofeph Varelaz, Lieutenant of the Royal Navy of 
the King of Spain, and Profejfor of JMathematicSy 
in the Academy of Guard-Marine at Cadiz. In a 
Letter to Dr. Morton. p. 112 
XIV. Of 
7 
