PREFACE. XXIX 



jc(5ts treated on in thefe pages, of none of 

 which fubjecSts i profefs to be a maftcr, and 

 therefore do not undertake to teach fuch 

 readers ; but on the contrary lliall always be 

 ready and even defirous to receive inftruc- 

 tions from them. I beg they will alfo con- 

 Cder that i do not aim at letting the un- 

 learned into the myfleries 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. 



Resfummas initio deberi parvo ac debili 

 experientia omnium temporum teftatur, 

 Amasnit. Acad. vol. 2. p. 266. §. 2. 



End of the P R E F A C E. 



IN 



