T O 
HIS ROYAL HIGHNESS 
THE 
PRINCE OF WALES. 
May it please Your ROYAL HIGHNESS, 
ONSCIOUS of the Difficulty of this Subjedf, and 
of my unequal Talents, it is with great Diffi- 
dence I have prefumed to lay before Your Royal 
Ilighnefs the following Refearches: Yet, howfoever imper- 
fect they may be found, I perfuade- myfelf they will not be de- 
nied the Honour of Your Sacred Patronage, fince they tend 
to the Advancement of a Science which wants, and (if the 
humbleft of its Votaries may be allowed to fay it) deferves 
Protection : 
