_Light_ and _Colours_.

* * * * *

_LONDON,_

Printed for _Henry Herringman_. 1664

* * * * *

A COPY
OF THE
LETTER

That Mr. _Boyle_ wrote to Sir _Robert Morray_,
to accompany the _Observations_ touching
the _Shining Diamond_.

_SIR,_

Though Sir _Robert Morray_ and Monsieur _Zulichem_ be Persons that have
deserv'd so well of the Commonwealth of Learning, that I should think my
self unworthy to be look'd upon as a Member of it, if I declin'd to Obey
them, or to Serve them; yet I should not without Reluctancy send you the
Notes, you desire for him, if I did not hope that you will transmit
together with them, some Account why they are not less unworthy of his
perusal; which, that you may do; I must inform you, how the writing of them
was Occasion'd, which in short was thus. As I was just going out of Town,
hearing that an Ingenious Gentleman of my Acquaintance, lately return'd
from _Italy_, had a Diamond, that being rubb'd, would shine in the Dark,