| As the semidiameter was only 28 inches, this large tree could have been but 168 years old. |
| And with your compas take the quantitee of the semidiameter iustly. |
| The moon will, at the full, be totally eclipsed, if its latitude is less than the difference between its own semidiameter, and that of the earth's shadow. |
| By the semidiameter of a celestial object, is meant the angle which the radius of its apparent circular disc subtends at the eye of the observer. |
| Whereby it dothe well appeare, that the side of anye sisangle made in a circle, is equalle to the semidiameter of the same circle. |
