Hauing (as you haue séene) attempted to set downe a full discourse of all the Ilands, that are situat vpon the coast of Britaine, and finding the successe not correspondent to mine intent, it hath caused me somewhat to restreine my purpose in this description also of our riuers. For whereas I intended at the first to haue written at large, of the number, situation, names, quantities, townes, villages, castels, mounteines, fresh waters, plashes or lakes, salt waters, and other commodities of the aforesaid Iles, mine expectation of information from all parts of England, was so deceiued in the end, that I was faine at last onelie to leane to that which I knew my selfe either by reading, or such other helpe as I had alreadie purchased and gotten of the same. And euen so it happeneth in this my tractation of waters, of whose heads, courses, length, bredth, depth of chanell (for burden) ebs, flowings, and falles, I had thought to haue made a perfect description vnder the report also of an imagined course taken by them all. But now for want of instruction, which hath béene largelie promised, & slacklie perfourmed, and other sudden and iniurious deniall of helpe voluntarilie offered, without occasion giuen on my part, I must needs content my selfe with such obseruations as I haue either obteined by mine owne experience, or gathered from time to time out of other mens writings: whereby the full discourse of the whole is vtterlie cut off, and in steed of the same a mangled rehearsall of the residue set downe and left in memorie.