INDEX. 499 
the moon, p. 274. Its lower regions more rarefied by 
heat in proportion than the upper, ihic). Atmofpherical 
logarithmic, p. 231. The univerfe hath a common 
armofphere, p. 292. That the denfity will often re* 
main unchanged, at fome particular height in the at- 
mofphere, by a given change of temperature, p. 278. 
That, at another, the preffure of the fuperincumbent 
atmofphere remains unchanged, p. 275. Vide Elajli- 
city, Subtangent. 
Atmofphere electric, method of making vifible, p. 396. 
Atmofphere , often electrical at fome height above the ground 
when it is not fo near the furface, p. 427. The elec- 
tricity of the armofphere doth not fhew itfelf within 
doors, p. 429. 
Attraction, mutual, of mephitic air, and martial and 
abforbent earths, p.363. None between oil and water, 
P- 453 - 
Aurorae Boreales , remarks on, p. 128. Portend ap- 
proaching tempefts, and from what quarter they will 
proceed, ibid. Conftantly fucceeded by hard foutherly 
or fouth weft winds, attended with hazy weather and 
fmall rain, ibid. The fucceeding ftorm may, with 
refpedl to violence and duration, be afcertained by the 
appearance of the Aurora, p. 130. An attention to 
this phenomenon ufeful to feamen, ibid. Conje&ures 
on it, p. 132. 
B. 
Baptifms and burials, in Manchefter, table of, p. 56. 
Barker, Mr. Thomas, his meteorological regifter for 1773, 
p. 20 2, &c. 
Barometers , M. De Luc’s improvements in the conftruftion 
of, p. 158. General principles of meafuring heights 
by the barometer, p. 229. In a particular temperature 
of the air, the difference of elevation is expreffed ia 
1 oooths of a Paris toife, by the difference of the ta- 
S f f 2 bular 
