scription of the shape and curious contexture of Feathers: and some
conjectures thereupon._

Obser. 36. Of Peacocks Feathers.

_A description of their curious form and proprieties; with a conjecture at
the cause of their variable colours._

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 Silkworms.

_Several Observables about the Eggs of Insects._

Observ. 42. Of a blue Fly.

_A description of its outward and inward parts. Its hardiness to indure
freezing, and sleeping in Spirit of wine._

Observ. 43. Of a water Insect.

_A description of its shape, transparency, motion, both internal and
progressive, and transformation. A History somewhat _Analogus_ cited out of
_Piso_. Several Observations about the various wayes of the generations of
Insects: by what means they act so seemingly wisely and prudently. Several
Quaeries propounded. Postscript, containing a relation of another very odd
way of the generation of Insects. An Observation about the fertility of the
Earth of our Climate in producing Insects, and of divers other wayes of
their generation._

Observ. 44. Of the tufted Gnat.

_Several Observables about Insects, and a more particular description the
parts of this Gnat._

Ob. 45. Of the great belly'd Gnat.

_A short description of it._

Obser. 46. Of a white Moth.

_A description of the feathers and wings of this, and several other
Insects. Divers Considerations about the wings, and the flying of Insects
and Bi