[503] 
Reuter, or Eagle-Hone mountain in the Peak, its volcanic origin, p. 
Roy, Major General William. See JBa/e. 
S. 
Schoenus Llthoftermos , a fpecies of grafs in the Well Indies, p. ig. 
Senfitive Plant. See Averrhoa Carambola, 
Sepp. See Motacilla. 
Shells. See Copbuflion. 
Smeaton , Mr. See Equatorial Micrometer , Baft. 
Specific Gravities, Remarks on, taken at different Degrees of Heat, and an eafy Method 
of reducing them to a common Standard, by Richard Kirwan, Efq. p. 267. Ufeful- 
nefs of a comparative view of the weights ot equal volumes of water, &c. ibid. A 
capita! advantage derivable from a table of fpeciiic gravities, ibid. Inftrument for 
making experiments deferibed, p. 268. Table of fpecific gravities, p. 269. Re- 
marks and obfervations by Bouguer, Mr. Bladh, Mr. De Luc, &c. p. 270. Advan- 
tages of this method pointed out, p. 271. 
Stag’s Head and Hor>is, Account of, found at Alport, in the Parifh of Youlgreave, in 
the County of Derby. In a Letter from the Rev. Robert Barker, B. D. p. 333. 
Place and manner of difeovering them, ibid. Not fuppofed to belong to a very old 
animal, p.354. Are of the throllel-nefl: fpecies, ibid. See Throftel-neft Hems. Con- 
jedlure how they were depofited where found, ibid. See Larkell. Dimenfions of the 
horns found at Alport, p. 355. Ditto of a large pair of throilel-nells horns, ibid. 
Ditto of the horns of a feven-years old flag, ibid. 
Summation of Infinite Series , Supplement to the Third Part of the Paper on, in 1782, by 
the Rev. S. Vince, M. A, p. 32. 
Sylvabelle, M. Saint Jacques. See AJlronomiccd Qbfervationst 
T, 
Tclefcopes. See Afirononiical Obfervations, Wires . 
tentacula , animals with tentacula confifl: of an almolt infinite variety, p.343. 
Terebdla, a double-coned one, found by Mr. Cordiner, at Bamff, in Scotland, p* 3 a ;, 
thermometer. See Barometer , &c. 
throjlle-nejl Horns, deferibed, p. 354. 
Tuft, a kind of Hone, deferibed, p. 353, 
V. 
Vacuum, Ele&rical Experiments made in order to alcertain the non-conducting Power of 
a. perfect one, by Mr, William Morgan, p, 27 a, Conduhon drawn from Mr- 
WalOv’s 
1 1 ; ' ^ ’ ' W,,Cs / 
