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 where to be had, and what are the ordinary and middle prices of them.

Another of all the Qualities or Schemes of Matter, as of all liquifiable things visced friable, heavy, transparent, abstersive or otherwise qualified according to all the classes of 1, 2, and 3. qualities, to the end that Materials for all Intentions and Experiments may be at hand and in sight.

Another of all Operations mentioned in the whole work, as Sawing, Hewing, Filing, Boaring, Melting, Dissolving, Turning, Beating, Grinding, Boyling, Calcining, Knitting, Spinning, Sowing, Twisting, &c. To the end that they all may also be at hand for the purposes aforesaid. Another of all Tooles and Machines, as Files, Sawes, Chissels, Sheeres, Sives, Loomes, Shuttles, Wheeles, Wedges, Knives, Skrewes, &c. for the same purpose also.

The compiler ought to publish all his conjectures, how old Inventions may be perfected and new one produceds, giving directions how to try the truth of them. So that by all those unto whose hands these Books shall come perchance, all the said suppositions may be tryed, and the successe reported to the Compiler himselfe.

The Compilers first scope in Inventions shall bee, how to apply all Materials that grow in Abundance in this Kingdome, and whereof but in considerable use and Profits are as yet made to more advantage to the Common-wealth. And also how all Impotents, whether onely blind, or onely lame, and all Children of above seven yeares old might earne their bread, and not be so long burdensome to their Parents and others.

There should be made a Preface to the Worke to teach men how to make the most of experiments and to record the successes of them whatsoever, whether according to hopes or no, all being equally Luciferous, although not equally Lucriferous.

There ought to be much Artifice used, that all the aforementioned Indices may handsomely referre One to anothers, that all things contained in the whole Book Rh