Obser. [37]. Of the Feet of Flyes, and other Insects.

A description of their figure, parts, and use; and some considerations thereupon.

Obser. [38]. Of the Wings of Flyes.

After what manner and how swiftly the wings of Insects move. A description of the Pendulums under the wings, and their motion; the shape and structure of the parts of the wing.

Obser. [39]. Of the Head of a Fly.

1. All the face of a Drone-fly is nothing almost but eyes. 2. Those are of two magnitudes. 3. They are Hemispheres, and very reflective and smooth. 4. Some directed towards every quarter. 5. How the fly cleanses them. 6. Their number. 7. Their order: divers particulars observ’d in the dissecting a head. That these are very probably the eyes of the Creature; argued from several Observations and Experiments, that Crabs, Lobsters, Shrimps, seem to be water Insects, and to be framed much like Air Insects. Several Considerations about their manner of vision.

Obser. [40]. Of the Teeth of a Snail.

A brief description of it.

Observ. [41]. Of the Eggs of Silk-worms.

Several Observables about the Eggs of Insects.