14th—All the Effects, Properties, and Uses of Plain, Convex, and Concave Glasses, both single and combin'd in Telescopes and Microscopes, shew'd and explain'd.

Several Kinds of Microscopes and Telescopes, with the Manner of applying them to their respective Objects; together with a Specimen of the Uses of such Microscopes and Telescopes.

A Multiplying Glass.

The Magick Lanthorn.

15th—A particular Apparatus to manifest and measure the Refraction of Air.

The Camera Obscura.

The Theory of Light and Colours, as delivered by Sir Isaac Newton, demonstrated by several of his principal Experiments.

The Archbishop of Spalato's Experiment, which discovered the Cause of the Rainbow.

Monsieur Hugen's Experiments, which discover the Causes of Halo's, of the Mock Suns and Moons, and of inverted Rainbows.

Experiments concerning the blending and Production of Colours by Motion.