C 896 J 
u comparative table of the correfponding obfervations of the firft fatellite made in the 
principal obfervatories, p. 162 — 186. 
Savoy. Obfervations made In Savoy, in order to afeertain the height of mountains by 
means of the barometer, being an examination of Mr. De Luc’s rules, delivered in 
his Recbercbesfur ies Modifications de l' Atmo/pbere, p. $1 3. See Mountains. 
Scale of barometers, fixing them with cifterns recommended, p. 40$, 406. The fcale 
and glafs tube of thermometers, their difference of expanfion, p. 834. 
Sbirach, his accountofthe fex of the working bees, p. 19. 21. 
Sea-anemonies , a third effay on them, p. 56. Obfervations on the generation of the fourth 
fpecies of anemonies, p. 57 — 78. A further obfervation on the frit fpecies 
p, 79—84. 
Sealing-wax, the bed coating for glafs-plates in electrical experiments, p.389, n . 
Sex of bees, difeoveries thereon, explaining the manner in which their fpecies is pro- 
pa ;ated, with an account of the utility that may be derived from thofe difeoveries 
by the aClual application of them to practice, p. 15. See Bees. The different fexes 
that conilitute the republic of bees, p. 19, 20. 
Shauls , an account of the fine wool of which they are made, p. 485. Produced from 
the Thibetian fheep, ibid. 
Sheep. An account of the fine wool produced from the Thibetian fheep, p. 4S5’. The 
fhauls made of it, ibid. 
Ships. Parts of their malls which were covered with lamp black and tar, or lamp black 
and oil, have efcaped injury by lightning, p. 85, 86. A curious inftance of this 
kind, p. 86 — 89. 
Short, Mr. his method of furnifhing telefcopes with Metals, p. 239, 340. 
Shuckburg , Sir George, his obfervations made in Savoy, in order to afeertain the height 
of mountains by means of the barometer, being an examination of Mr. De Luc’s 
rules, delivered in his Recherches fur les Modifications de /’ Atmofpbere, p. 515. See 
Mountains . 
Smeaton , Mr. an account of fome experiments made with an air-pump on his principle; 
together with fome experimets with a common air pump, p. 614. S ez Air-pump. 
Defcription of Mr. Smeaton’s pear-gage, p.614 — 616. Quantity of permanent air 
remaining ‘in the receiver of an air-pump, when exhaufted as much as poffible, can 
be known only by his gage, p. 636, 637. It is alfo the only m ans of difeovering 
what part of the receiver contains vapour, and what part permanent air. p. 637. 
Smith, Dr. defeats in the compofitions of metal recommended by him for the fpecula of 
reflecting telefcopes, p. 297. 299. How this imperfe&ion in the metal may be pre- 
vented, p. 300 — 303. 
Snow, the furface of the earth at the pole covered with it, p. 764, n. 
Span-man, Dr. Andreas, his account of a journey into Africa from the Cape of Good- 
hope; with a defcription of a new fpecies cf cuckow, p. 38* S ee Africa 
dduckoiJJ. 
Speculum . 
