sou 
SPE 
447 
Abridg. 
Sound. Upon the founds and hearing of fifhes by Jac. 
Theod. Klein, or fome account of a treatift 
inti tied. An enquiry into the reafons why the 
author of an epiftle, concerning the hearing of 
fifhes, endeavours to prove they are all mute and 
deaf - - Brocklejby 
Sowing. See Sembrador 
Space. An account of the repetition of an experi 
ment of the late Dr. Hooke’s, concerning two 
liquors, which, when mixed together, wil 
poflefs lefs fpace, than when feparate ; with ano 
ther experiment confirming the fame Haukjbee 
Spa-Waters. An examen of the chalybeat, or Spa- 
waters, called by the Germans acid, or <bwre 
brunns, or fountains; but proved to be of 
contrary nature, that is, alkalis Slave 
— An enquiry into the mineral elaftic fpirit in 
Spaw-water - - Brownrrgg 
Continued - - Brownrig g 
Spain. Letters concerning fome remarkable plant 
and inft&s obferved in Spain - Breynius 
Some obfeivatioas on the country of Spain 
Brice 
Spar. An enquriy into the original flute and pro- 
perties of lpar and fparry produdlions, parti- 
cularly the (pars or cryftals found in the Cor- 
nifh mines, called the Cornifh diamonds 
Borla/e 
— — An attempt to account for the formation of fpars 
and harder cryflals - King 
■— — A letter containing fome obfervations on a fin- 
gular fparry incrullation found in Somerfet- 
fhire - - King 
Spawn. Letter concerning the fpawn of cod fifh, 
Leeuwenhoek 
Specific Gravity. See Gravity 
Speculum. Experiments about making a concave 
fpeculum, nearly of a parabolick figure Gray 
**— A new method of improving and perfedting 
catadioptrical telefcopes, by forming the 
fpeculum of glafs inftead of metal Smith 
"— »■■■ See GlaJJeSy Telefcope 
Speech. Letter to Mr. Boyle concerning an effay of 
teaching a perfon deaf and dumb to fpeak and 
undcrfland a language, with the fuccefs of it 
WallU 
Tranf. 
XLV 233 
XXVII 325 
XXVIII 24; 
LV 218 
LXIV 357 
XXIV 2045 
LVI 229 
XLVI 250 
LVII 58 
LXIII 241 
XXII 821 
XIX 787 
XLI 326 
V 1087 
XI 883 
IV 2 182 
- 198 
V 10 
X 642 
V 2 266 
/ 
I 214 
VIII 1 13 
III 388 
Refie&Ions 
L 1 1 
