66 Description and Use of the

PROBLEM IV.

To find the difference of latitudebetween any two places.

132. Suppose London and Rome, findthe latitude of each place by prob. ii. art.130. Their difference is the answer.

PROBLEM V.

To find the declination of the sun.

133. First, On either globe for the sun’sdeclination, find his place in the ecliptic byprob. i. art. 98, &c. Then bring that point ofthe ecliptic line upon the globe under thestrong brass meridian, and the degree whichit cuts is the fun’s declination for that day.Or,

Upon the terrestrial globe, that parallelwhich passes through the point of the eclip-tic answering to the day of the month,will strew the fun’s declination, countingthe number of parallels from the equator.Also,

On