_Nantucket_ whalers best acquainted with the gulph-stream, ii. 198.
_National_ wealth, data for reasoning on, ii. 408.
three ways of acquiring, 410.
_Navigation_, difference of, in shoal and deep water, ii. 158.
observations on, 195, 196.
from Newfoundland to New York, 197.
inland, in America, iii. 118.
_Needle_ of a compass, its polarity reversed by lightning, i. 248, 325.
of wood, circular motion of, by electricity, 332, 351.
_Needles_, magnetised by electricity, i. 148.
and pins, melted by electricity, 249.
_Negatively_ electrised bodies repel each other, i. 294.
_Negroes_ bear heat better, and cold worse, than whites, ii. 86.
_Newbury_, effects of a stroke of lightning there, i. 310.
_New-England_, former flourishing state of, from the issue of paper money,
iii. 145.
circumstances which rendered the restriction of paper money there not
injurious, 148.
abolition of paper currency there, 263.
_Newfoundland_ fisheries, more valuable than the mines of Peru, iii. 452.
_Newspaper_, one sufficient for all America, in 1721, i. 23.
instance of one set up by Franklin at Philadelphia, 86.
_New-York_, effects of lightning there, i. 326.
former flourishing state of, from the issue of paper-money, iii. 146.
sentiments of the colonists on the act for abolishing the legislature
of, 232.
obtained in exchange for Surinam, 349.
_Nollet_, Abbé, Franklin's theory of electricity opposed by, i. 113.
remarks on his letters, 430.
_Non-conductors_ of electricity, i. 378.
_Non-electric_, its property in receiving or giving electrical fire,
i. 193.
_North-east_ storms in America, account of, ii. 68.
_Nurses_, office at Paris for examining the health of, iii. 549*.