surmisal

So leſt it ſhould be ſtill imputed to me, as I have found it hath been, that ſome ſelf-pleaſing humor of vain-glory hath incited me to conteſt with Men of high eſtimation, now while green years are upon my head, from this needleſs ſurmiſal I ſhall hope to diſſwade the intelligent and equal Auditor, if I can but ſay ſuccesfully that which in this Exigent behoovs me, although I would be heard only, if it might be, by the elegant and learned Reader, to whom principally for a while I ſhall beg leave I may addreſs my ſelf.