Mathematicall Magick

TO HIS
HIGHNESS
The Prince Elector
Palatine.

May it please your Highness,

I should not thus have presented my diversions, where I owe my study and business, but that where all is due, a man may not justly withhold any part.

This following Discourse was composed some years since at my spare hours in the University. The subject of it is mixed Mathematics, which I did the rather at such times make choice of, as being for the pleasure of it, more proper for recreation, and for the facility more suitable to my abilities and leisure.

I should not, Sir, have been ambitious of any so Great (I could not of any Better) Patronage, had not my relation both engaged and emboldened me to this Dedication.

They that know your Highness, how great an encourager you are, and how able