i84 CONCLUSION, 



tlcmcn, that upon Trial of this Work, they willjind every Section 

 to anfwer in all RefpeEis as I have Jtated the Cafe therein. 



I could have fwelled this Work much larger; but my chief Study 

 was to infert all that lo.y in my Power, of what is mof ufeful 

 and necejfary, throughout the whole Work, 



And it may be well ajfured that I have ifed my beft Endeavours 

 to render the Whole as intelligible as pofjible, and fatter myfelf 

 the Reader will be fo candid as to excufe any Error or Omiffion 

 that may occur to him in the Perifal of this Work, 



Honorable Gentlemen, I have no more to add, but that I hope 

 to be ejleemed, 



Yourfincere humble Servant and Wellwifier^ 



rViUlam ^^rlwUru, 





