2,29734 will be as the Tropical Summers Day Heat, and 0,33895 as the Action of the Sun in the Day of the Winter Solstice.
After this manner I computed the following Table for every tenth Degree of Latitude, to the Æquinoctial and Tropical Sun, by which an Estimate may be made of the intermediate Degrees.
| Lat. | Sun in ♈ ♎ | Sun in ♋ | Sun in ♑ |
|---|---|---|---|
| 0 | 20000 | 18341 | 18341 |
| 10 | 19696 | 20290 | 15834 |
| 20 | 18794 | 21737 | 13166 |
| 30 | 17321 | 22651 | 10124 |
| 40 | 15321 | 23048 | 6944 |
| 50 | 12855 | 22991 | 3798 |
| 60 | 10000 | 22773 | 1075 |
| 70 | 6840 | 23543 | 000 |
| 80 | 3473 | 24673 | 000 |
| 90 | 0000 | 25055 | 000 |
Those that desire more of the Nature of this Problem, as to the Geometry thereof, would do well to compare the XIII. Prop. Cap. V. of the Learned Treatise, De Calculo Centri Gravitatis, by the Reverend Dr. Wallis, Published Anno 1670.
From this Rule there follow several Corollaries worth Note: As I. That the Æquinoctial Heat, when the Sun comes Vertical, is as twice the Square of Radius, which may be proposed as a Standard to compare with, in all other Cases. II. That under the Æquinoctial, the Heat is as the Sine of the Sun's Declination. III. That in the Frigid Zones when