[ 493 ] 
Letter from M. John Tornften, on the fame phenomenon in Jemtland in Sweden, p. 
391. Remarks on that Letter, p. 392. M. Cazalet’s account of his rendering quick- 
filver folid at Bourdeaux, p. 395. 
R. 
Rain , Extract of a regifter of the barometer, thermometer, and Rain, at Lyndon In 
Rutland, 1782. by Thomas Barker, Efq; p. 232. Table thereof, ibid. State of 
the weather, and fruits of the earth at the firft part of the year, p. 243. Hay very 
plentiful, ibid. The harveft was late and tedious, p. 244. Latter part of the year 
dry, ibid. Uncommon circle feen about the moon, p.245. 
Ramjden , Mr. See Eye-glaffes . 
Refiftance of the Air, Experiments upon, by Richard Lovell Edgeworth, Efq. p. 136. 
The mod accurate machine for afcertaining the force and velocity of the wind, invented 
by the late Sir Charles Knowles, ibid. But his calculations, and thole in Belidor’s 
“ Architedure Hydraulique,” not to be depended on, p. 137. Experiments to de- 
termine the difference of refiftance between furfaces of different figures, ibid. — 141. 
Miftaken opinion of Dr. Hook, Monf. Parent, & c. concerning the adion of the air 
on the fails of a fhip, p. 141. Commonly received demonftration among pradica* 
mechanics concerning the fails of windmills and under-fhot water-wheels, refuted by 
Mr. Smeaton, ibid. General caufe of the different refiftance of the air upon furfacas 
of different fhapes, p. 142. Table, p. 143. 
Rocmer . See Sun and Solar Syjlcm . 
S. 
Sarcocele , a defcription of a fpecics of a moft aftonifhing fize in a black man in the illand 
of Senegal ; with fome account of its being an endemial difeafe in the country of 
Galam, by J. P. Schotte, M. D. 8$. Defcription of the difeafe, p. 86. Manner of 
the patient’s riling and getting to the door, p. 86. Suppofed dimenfions of the fcro- 
tum, ibid, and weight, p. 87. Manner of his difchargiiig his urine, ibid. His age 
and ftate of body, p. 88. Had no fymptons of a rupture, a diforder not very com- 
mon among the blacks about Senegal, ibid. Account of the beginning and progrefs 
of the difeafe, ibid, his employment, when the diforder prevented his doing his 
ufual work, p. 89. Was alive in 1779, twenty-five years from the beginning of the 
diforder, ibid. See Galam. Conjedures concerning the caufes of the diforder, p. 93. 
The moft probable feems to be an hereditary difpofition, ibid. 
Saturation, what, p. 39. 
Saujfurc, Mr. de. See Eudiometer . 
Schotte , J. P. Sarcocele. 
Schvjedi*<wer t Dr. See Ambergrfe* 
.* Stilla, 
