150 Of the Advancement of Learning, L i b . V . 



yigain^ the Loadjlom draws Iron through all interpos'd Bodies that we 

 know, as Gold 5 Silver 3 Glafs, &c. Fix therefore ferae medium 

 upon it (if it may be) that may intercept, and arreft its virtue. Make 

 a trial of Quickfilver 5 ofOyh Gums, a burning coal 5 and the like, 

 which yet have not been experimented. So there have been brought 

 in of late certain Perfpeciives, which multiply after a ftrange manner 

 the minuted vilibles: Prefs the ufe of them, either upon fmall ob jefts, 

 as they may not be able to work upon; or upon fo vaft, as they may 

 be confounded in working : As whether they can clearly difcover thole 

 moats in Urine, which otherways could not be difcern'd ? Whether 

 in lewels, ev«ry way pure and fpotle(s, they can make the grains and 

 imperceptible clouds to become vifible ? Whether can they expofe to 

 view the moats in the Sun ^which are untruly charged Upon DemocritHs 

 „l p^(., for his Atoms, and the Principles of Nature J) as if they were great 

 Fpifi.ia- Bodies ? Can they fo diftinguifh tothe fight the groffer duft made of 

 Tl'rn ' Cerufs, and Vermilion, that the fmall grains may appear ; here the 

 Lib.ic' red, there the white ? Again^ f«« they multiply greater Figures (ima- 

 gine a face 5 an eye, or lb) to the fame bignefs they can a flea, or a 

 little worm? Cm f/je;' make a piece of Cyprels, or Cobweb-Lawn ap- 

 pear fo full of holes, as ifit werea Net? But vpc fiay the lefs upon the 

 Compitlijons of Experiments becaufe commonly they fall not within the 

 limits of literate experience 3 but are rather xekn'd to Canjes--, and 

 Axioms ■•> and the Nnv Orgdniin}. For wherefbever there is a Nega- 

 tive j Privative; or exclufive faculty; there is already fome light gi- 

 ven to the /«z'e«^/t'»^/fi»v///. Thus (ar o£ the Compiiljiofz of Expert' 

 merit. 



^ Application of Experiment is nothing eli'e than a Kitty Tranflation 

 of it to fome ether profitable Experiment. Example may be this; All 

 Bodies have their own dimenfions, and their own weights; Gold is 

 of greater weight, oflefsdimenlion, than Silver; Water than Wine. 

 From this is traduced a profitable Experiment; that from a juft weight 

 and meafure being taken, you may know how much Silver hath been 

 rnixt with Gold; how much Water with Wine; which was that celebra- 

 ted E'ugmiix of Archimedes. So flcfti fooner putrifies in fbme Cellars, 

 than it doth in others. It will be of ufe to make application of this 

 Fxperiment to the finding out of Airs, more oriels healthful, for ha- 

 bitation; namely, there where fleOi is longeft preferv'd from putre- 

 faftion. The fame may be applied to the difcovery of healthful, or 

 peltilential feafons of the year. But there are innumerable examples 

 of this Nature: Only let men awake, and perpetually fix theireyes, 

 one while, on the nature of things; another while, on the applica- 

 tion of them to the ufe and fervice of mankind. So much concerning 

 the Application of the Experiment. 



§ Ccpulaiion of Experiment is the Links and Chain of Application \ 

 when as things^ P"gl^i ^*jd feparate had been to little ufe, are, (^connex- 

 ed) offeree and efficacy. For example, you defire to have late Rofes 

 or fruit ; this is efFefted if you pull ofFthe more early buds when they 

 are newly knotted; the fame is done, if you lay Vhe roots bare until 

 the fpring be well come on, and expofe them unto the open Air^ 

 but it will take the better, if you joynboth thefepraftices of putting 

 back germination. So Ice and Nitre do much conduce to refrigera- 

 tion 5 



