gested into a more
_NATURAL METHOD_.

In the TABLE, the first _Figure_ signifies the _Number_ of the _Tracts:_
the second, the _Page_, as it is remarked in the same.

A.

_Agriculture_, Head of Inquiries concerning it. _num._ 5 _pag._ 91.

_Air._ The weight of it in all changes, by wind, weather, or whatever
other influence observable by a standing _Mercurial Balance_, call'd
a _Baroscope_, hinted in reference to M. _Hooks_ Micrography, n. 2.
p. 31.
applied to particulars by Dr _Beale_, 9. 153.
with additions, 10. 163.
described with observables relating to an Earth-quake about _Oxford_ by
Dr. _Wallis_, 10. 167.
Mr. Boyle's remarks on the same, 11. 181.
The _Wheel-Baroscope_ improved and delineated by M. _Hook_, 13. 218.
Another Balance of the Air contrived by M. _Boyle_, and call'd
_Statical_, by which the former may be exactly stated and examin'd
for many particular applications, 14. 231.

_Anatome_, see _Flesh_, _Blood_, _Animals_, _Lungs_, _Petrification_,
_Taste_; item, _Steno_, _Graeff_, _Bellinus_, _Redi_, in the _Liste
of Books_.

_Animals_, one may live by the blood of another, the whole mass of his
own blood being drawn out, and the blood of another infus'd in the
mean time, 20. 353. See _Bloods Tranfusion_.
The Generation and Functions of Animals deduced by Mechanical
principles, without recourse to _substantial form_, 18. 325. See
_Honor. Fabri._ & n. 20. p. 365. See also _Guarini_.

_Artificial Instruments_ or _Engins._ To weigh _air_, see _Baroscope_, or
rather _Air_.
To discern drought or moisture of the Air, see _Hygroscope_. n. 2. p.
31.
appliable in the observation of _Tydes_, 17. 300.
_Thermometers_, to measure degrees of heat and cold, 2. 31.
described, 10. 166.
applied in the examination of _Tydes_, 17. 300.
An Instrument for graduating _Thermometers_, to make them _Standards_
of heat and cold, 2. 31.
A new Engine for grinding any Optick Glasses of a Sphaerical figure, 2.
31.
To measure the Refractions of Liquors of all kinds, for establishing
the Laws of Refraction, 2. 32.
To break the hardest Rocks in _Mines_, 5. 82.
To try for _fresh_ waters at the bottom of the _Seas_, 9. 147.
To find the greatest depths in the Sea, 9. 147.
The _Engin_ for fetching up fresh