common and other Sands: a description
of a very small Shell.
81Observ. 12.Of Gravel in Urine.
A description of such Gravel, and
82some tryals made with it, and conjectures
at its cause.
Obser. 13.Of Diamonds in Flints.
A description and examination of
some of them, explicated further by
83Cornish Diamonds: several Observations
about reflection and refraction:
and some deductions therefrom; as
an explication of whiteness; that the
Air has a stronger reflection then Water.
84How several Bodies may be made
transparent: an explication of the
85Phænomena of Oculus Mundi. Of
the regular Geometrical Figures of
86several Bodies: an hypothetical
87explication mentioned: the method of
prosecuting this inquiry.
88Observ. 14.Of frozen Figure.
The Figures of hoar Frost, and the
89Vortices on windows: several Observations
on the branched Figures of
90Urine: the Figures of Regulus
91Martis stellatus, and of Fern. Of the
92Figures of Snow. Of frozen water.
Observ. 15.Of Kettering Stone.
93A description of the Figure of the
94Particles, and of the Pores, and of the
95Contexture. Several Observations and
96Considerations thereupon: some
Conjectures about the medium and
97propagation of light, and the constitution
of fluid and transparent Bodies. Several
98Experiments to prove the porousness
of Marble, and some other
Stones. An account of some Experiments
to this purpose made on an
99Oculus Mundi: some other Considerations
and Experiments about the
100porousness of Bodies: some other
Considerations about the propagation of
light and refraction.
Observ. 16.Of Charcoal.
101Of two sort of Pores to be found
in all Woods and Vegetables; the
shape of them; the number, thickness,
manner and use of these Pores.
102An explication of the Phænomena
of Coals. The manner of charring
Wood, or any other body. What part
103of Wood is combustible. An Hypothesis
104of fire explicated in twelve
particulars, wherein the Action of
the Air, as a Menstruum in the
dissolution of all sulphureous bodies, is
105very particularly explicated, and
some other Considerations about the
Air proposed: the examination of
106a piece of Lignum fossile sent from
Rome, and some Conclusions thence
deduc'd.
107Observ. 17.Of Wood, and other Bodies, petrified.
Several Observations of divers
108kinds of these substances. A more
particular examination and explication
of one very notable piece of petrified
Wood; and some Conjectures about
the cause of those productions:
109several Observations made on other
110petrified Bodies, as shells, &c. And
111some probable Conclusions thence
112deduc'd, about the original cause of
those Bodies.
113Observ. 18.Of the Pores of Cork, and other Bodies.
114Several Observations and Considerations
about the nature of Cork:
the number of Pores in a cubical
