Sentence:  Even ſo the account of your <WSD>Looking-glaſs</WSD> puts us in hopes of ſome mighty Diſcoveries to be made by the Help of it, and at the ſame time, ſeems to carry its own Contradiction along with it; for a Pocket <WSD>Looking-glaſs</WSD>, is, doubtleſs, a moſt prepoſterous Help for taking a "Clear View" of a "Great Coloſſus", unleſs it be one of thoſe, that contract the largeſt Bodies into a ſmall compaſs; and then it may give us an Idea of the Proportions, but not a clearer View of all the Partcular Beauties or Deformities. 
Meaning of the word marked with <WSD> tags:  (t=smooth surface that reflects light so as to give an image of what is in front of it). (from 1520s)