water defended by Explication, 13.
228.
Huge _Wheels_, and other Engins for _Mines_, 2. 23.
By the fall of water to blow wind, as with Bellows, 2. 25.
{400}

_Astronomical_ Remarks of a _New Star_ seen by _Hevelius_ in _Pectore
Cygni_, which he supposeth to be the same, which _Kepler_ saw A.
1601. and continued until 1602. and was not seen again until 1662.
and then almost always hiding it self till 24. _Nov._ 1666. _That_,
seen by _Kepler_ was of the third magnitude; this now, of the sixth
or seventh. Q. Whether it changes place and magnitude, 19. 349.
The _Scheme_, 21. 372.
A _New Star_ in _Collo Ceti_, observ'd from 1638, to 1664, 1665, 1666.
with its vicissitudes and periods, and causes of change, open'd by
_Bullialdus_, who conceives the bigger part of that round body to
be obscure, and the whole to turn about its own Center, 21. 382.
Another _New Star_ call'd _Nebulosa_ in _Cingulo Andromedae_, seen when
the Comet appear'd 1665. observ'd by the said _Bullialdus_ to
appear and disappear by turns, _ibid._ 383.
A method for observing the _Eclipses of the Moon_, free from the common
Inconveniences, by M. _Rook_, 22. 387.

B.

_Baroscope._ See _Air_ and _Artificial_ Instruments.

_Blood._ The new Operation of _Transfusing_ blood into the veins, out of
one Animal into another; with considerations upon it, 20. 353.
The first Rise of this Invention, 7. 208.
The Success, 19. 352.
Proposals and Queries, for the improvement of this Experiment, by M.
_Boyle_, 22. 385, 386.

Little Blood-letting in _China_, 14. 249.
Blood found in some mens veins like Milk, or of the colour of Milk, 6.
100.
again p. 117. 118.
and again 8. 139.

A _Bolus_ in _Hungary_ good as _Bole Armenick_, 1. 11.

The _Bononian Stone_, see _Light_ or _Stone_, 21. 375.

_Books_ abbreviated, or recited:
Laur. _Bellinus_ de Gustus Organo novissime deprehenso, 20. 366.
abbrev.
Gerh. _Blasii_ Anatome Medullae Spinalis & Nervorum inde procedentium,
abbrev. 22. 397.
Mr. _Boyle_ of Thermometers and History of Cold, abbrev. 1. 8. more 3.
46.
---- His _Hydrostatical Paradoxes_ abbrev. 8. 145. more largely 10.
173.
---- His _Origin of Forms_ and _Qualities_, 8. 145. abbreviated 11.
191.
Monsieur _de B