C S79 ] 
hflruments , a number of curious ones in the Bramins’ obfervatory at Benares, p* 599, 
In great prefervation, though ere&ed two hundred years ago, ibid. Conftruftiom 
and fituation of them, p. 599—601. Their defcription and ufe, p. 601— 604. 
607. 
Iwernefs, an account of a volcanic hill near there, p. 385. See Volcanic HrlL 
Journal, meteorological, for the year 1776, kept at the houfe of the Royal Society, 
p. 357 — 384. See Tables . 
Journey , an account of one into Africa from the Cape of Good Hope, and a defcription 
of a new fpecies of Cuckcw, p. 38. See African Cuckovo. 
Jupiter s hrfl fatellites, eclipfes thereof obferved during the laft ten years, concerning 
the difference of longitude at Paris and Greenwich, refulting therefrom ; with a com- 
parative table of the correfponding obfervations of the iirft fatellite made in the prin- 
cipal obfervatories, p. 162 — j 86. 
K. 
Kaunkuhl , in the Hartz, its depth determined by barometrical obfervations, p. 417-^ 
419. 436—440. 
U 
Lahaffa , the capital of Thibet, fome account of it, p.481, 382. Its trade, p, 482- 
—487. 
Lamp-black and t2r, or lamp-black and oil, preferves the parts of mafis of fhips covered 
with it from injury by lightning, p. 85, 86. A curious inflance of this kind, 
p. 86—89. Experiments in artificial ele&ricity with lamp-black and oil, 
p. 89—91. 
Lanark , computations of barometrical obfervations made on heights near there, 
P- 775- 
Landen , Mr. John, his new theory of the rotatory motion of bodies affeded by forces 
diflurbing fuch motion, p. 266—293. 
I,ava, an account of fome difcovered near Invernefs, p. 385—387. 
Lead-mines in the Ramelfberg near Godar, method of working them, p. 414, 
Leather , its effect in experiments with the air pump, p. 62^, &c. 
Leek in Staffordfhire, the remarkable cafe of a woman there, p, 458—464. 
Leyden bottle , Dr. Franklin’s theory of it further illuflrated, p. 100, &c. 
Lightning , parts of mads of fhips preferved from its injury by being covered with lamp^ 
black and tar, or lamp-black and oil, p. 854 86. A curious inftance of this kind,, 
p. 86 — 89. 
Linhoufe , computations of barometrical obfervations made on heights near there, 
P- 779- 
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