I N D E X. 48,5" 
Cwckow, the common opinion about its neftlings doubt- 
ful, p. 299. 922. 324, &c. . Never migrates from this 
ifland, p. 304. 
B., 
Denarius, of the PIsetorian family, defcribed, p. 6o„ 
Dipping-needle a new, defcribed, p. 476. 480. 
Dog, breeds with a wolf, p. 9. 
Dollond, Mr. Peter, his improvement of Hadley’s Qua- 
drant, p. 95, &c. 
Dyes in red and yelIow 3 p. 56. 
E„ ' . 
Ecliptic, the point of the longeft afcenfion in it found, 
p. 438. The greateft difference of the arc from its 
oblique afcenfion, p. 444. 
Elder, ferviceable in preferving plants and trees from in- 
feds and flies, p. 348. 
Electricity, the theory of it confirmed by a late violent 
lightning, p. 134, 435* Of the air, fogs, and clouds, 
p.138. 145. . 
Electrometer a new, invented by Mr. Henley, p. 360* 
Its advantages, p. 361. 
Eratojlhenes, his fieve miftaken, p, 329. ' Ill explained, 
p. 330. Retrieved, p. 332. 
Ether imbibes fixed air, p. 156. 
F. ’■ 
Fairnburn water in Scotland analyfed,, by Dr. Monro, 
^ P- 25 - 
Fermenting liquors emit a great quantity of fixed air, 
T* 348, 149. Recovered when flat by a mixture of it, 
P- * 54 - 
