vi The PREFACE.

Task of this Kind, I dm of Opinionsuch as could perform it better , wtllnot be the firfl in finding Faulty and amconfident my weak Endeavours will be•very acceptable to low Proficients whoare real Lovers of this Kind of Learn-ing,

I also flatter my self with Hopes ofthe kind Sentiments of the learned andbest Judges of the SubjeB: Æ well be-cause I have given several Things intire-h neWy and refbhsd several Problemsnever before mfified on y as that I haverendered the Solutions of mofi of thecommon Cafes in praBical Gunnerymuch shorter and eafter than former-ly j having made several Things obvi-ous by InfpeBion , whose Demonstrati-ons , by the best Geometer that everwrote for the Use of praBical En-gineers y were drawn : from an ad-feBed fihiadratick Equation y rats’dfrom Properties of the Parabola sup-posed to be known, or from pretty dif-