P R E F ACE. xxix 
jedls treated on in thefe pages, of none of 
which fubjedts i profefs to be a matter, and 
therefore do not undertake to teach fuch 
readers y but on the contrary fhall always be 
ready and even defirous to receive inftruc- 
tions from them. I beg they will alfo con- 
ttder that i do not aim at letting the un- 
learned into the myfteries of this part of 
knowledge, or even teaching them the ele- 
ments of it. My bufinefs is. only to excite 
curiofity, and therefore fmall errors can be 
of no confequence. What I have farther 
to fay will be found in notes. 
Res fummas initio deberi parvo ac debili 
experientia omnium temporum teftatur. 
Amaenit. Acad. vol. 2. p. 266. §. 2. 
End ofthePREF AC E. 
IN 
