"Having now retrieved a little more of leasure, both for Delineation and Description, for a further elucidation of what I have said, I shall make it my third Attempt, to explain; First, A Helioscope to look upon the body of the Sun, without any offence to the Observers eye. Secondly, A way of shortening reflective and refractive Telescopes. Thirdly, A way of using a Glass of any length, without moving the Tube. Fourthly, An Instrument for taking the Diameters of the Sun, Moon and Planets, or for taking any other Distances, to five or ten Degrees, to the certainty of a Second. ... Fifthly, An Instrument for describing all manner of Dials, by the tangent projection. Sixthly, The uses thereof; 1. For adjusting the Hand of a Clock, so as to make it move in the shadow of a Dial, whose style is parallel to the Axis: Or, 2. In the Azimuth of any Celestial Body, that is, in the shadow of the upright, or any other way inclining Style, upon any plain. 3. For making a Hand move according to the true æquation of Time. 4. For making all manner of Elliptical Dials, in Mr. Foster's way, &c. 5. For communicating a circular motion in a Curve Line, without any shaking: And for divers other excellent purposes."