[ 873 ] 
of the motion of the earth’s axis, p. 267 — 288. How the joint centrifugal force of 
-the particles of a fpheroid or cylinder, having a rotatory motion about any momen- 
tary axis, is computed, p. 289 — 29-5. The ratio of the earth’s diameters, p, 767. 
Bed method of determining the figure of the earth, ibid. 
Eafi Indies . The atmofphere amazingly-clear there, p. 604.. 
Ebnfounes . Trandation of a paffage in Ebn Younes; with fome remarks thereon, 
p. 231. Numbers in the manufcript fuppofed to be different from what they were 
in the original tables, ibid. A midake in the Arabic letters and figures eafily made 
by a perfon ignorant of his fubjeCt, p. 232. An indance of this fort, ibid. Dif- 
ferences in the manufcript obfervations, and the calculations by modern tables ac- 
counted for, p. 232 — 240. A translation of the Arabic paffage entire, p. 240— 
24 3- 
lulipfes of Jupiter’s firft fatellites, obferved during the lad ten years, relatively to the 
difference of longitude at Paris and Greenwich refulting therefrom ; with a com- 
parative table of the correfponding obfervations of the fird fateliite, made in the 
principal obfervatories, p. 162 — 186. 
Edinburgh , computations of barometrical obfervations made on heights near there, 
P- 777- 
Eleftrical Experiments , an account of fome new ones, p. 48. Defcription and ufe of the 
atmofpherical electrometer, p. 48, 49. Part of a journal of obfervations on the 
eledricity of the atmofphere, p. 50. A quantity of electricity is at all times in the 
atmofphere, ibid. The electricity of the atmofphere or fogs is always of the fame 
kind, ibid. The dronged eleCtricity is in thick fogs ; the weaked in cloudy weather, 
ibid. Defcription of the electrometer for the rain, p. 51, 52. Experiments made 
with a giafs tube hermetically fealed, and having fome quickfilver inclofed in its 
cavity, p, 53—55'. New eleCtrical experiments and obfervations, with an improvement 
ofMr, Canton’s electrometer, p.388. The giafs plate ufed in the following experiments 
coated with fealing-wax, ibid. Experiments on Mr. Volta’s plates, commonly called 
a machine for exhibiting perpetual eleCtricity, p. 389—392. Experiments on water- 
colours, p. 392 — 394. On oil colours, p. 394, 395. Promifcuous experiments, 
p. 396, 397. On a piece of new white flannel, tied round the globe of an elec- 
trical machine, p. 397, 398. On a phial, the infide coating of which was duck 
with varnifh, p. 398, 399. Defcripiion of a pocket electrometer, p. 399, 400. 
Elettri cal machine, experiments and obfervations on Mr. Volta’s, p. 1 1 6— : 18. Ex- 
periments on his machine for exhibiting perpetual eleCtricity, p. 389 — 392. 
Electrical cylinder (Mr. Hemming’s), experiments with it on the balls of Canton’s elec- 
trometer, fome days after ufing it, p. 109 — 113. 
Electricity . Experiments and obfervations in EleCtricity, p. 85. Remarks on the 
eifeCts of lamp-black and tar, or lamp-black and oil, as protectors of bodies from the 
droke of lightning, p. 85—89. Similar effeCts produced by experiments in the artifi- 
Voi. LX VII. 5 R cial 
