Of the Dew. chap. 6.
DEw is impression gendered of colde vapour and moist, not gathered in∣to a bodye of a Clowde in the neather parte of the middle space of the ayre, méeting with some lyttle colde. And Aristotle saith, that there is no dew but when the Southerne winde bloweth. For dewe is lyttle raine, and raine is much dew. And so the Southerne wind by his moisture gendreth and nourisheth dewe. And the Northerne winde by his Page [unnumbered] drynesse licketh vp dewe, and thrusteth togethers, and bindeth it with his strong cold. Also the Moone imprinteth her moi∣sture in the earth, & is cause of gendring and dew therein, as Ambrose sayth, and he calleth the Moone mother of dew. And therefore by night by vertue of yt Moone, in the aire dew ariseth vp priuelye, and commeth downe at last, and is séene, and sheddeth & falleth lostly on the ouermost parts of grasse and hearbs. In his rising & downe comming dew giueth vertue & strength to trées, hearbes, and grasse, and things yt the heat of the day had dryed, wasted, & bowed downewardes: & them the night dew apparaileth and restoreth and maketh them stand vpward. Also in the tops of hearbs and grasse dew gathe∣reth it selfe in drops: And as though it would vpward to his generation, to the which alway it ascendeth, it hangeth it selfe in the ouermost part of leaues & of grasse: also dew susteineth not ye strength of the Sun, but is dissolued & falleth anon by working of ye Sun beames, & vanish∣eth away: but it forsaketh not his vertue yt is printed in the aire. For by presence of his shedding in yt aire, it leaueth open∣ly the effect of his vertue in grasse and hearbes & séedes. And though dew bée a manner airy substance & most subtil out∣ward, neuerthelesse in a wonderful man∣ner it is strong in working & vertue: for it moistureth the earth, & maketh it plē∣tious, & maketh floure, pith, & Marrowe, increase in corne & graines:* And fatteth & bringeth forth broad Oysters & other shell fishes in the sea, and mamely, dew of springing time. For by night in Springing time Oysters open them∣selues against dew, and receiue dew that commeth in betwéene the two shels, and holdeth and kéepeth it: And that dewe so holden and kept, féedeth the flesh, and maketh it fat: And by his incorporati∣on with the inner parts of the fish brée∣deth a full precious gemme, a stone that is called Margarita. And the more noble that the margarite is,* the more white it is, & the more in quality, as it is sayd in li. Gēmarum. Also the birdes as rauens, while they he whitlewe in feathers, ere they be blacke, dewe féedeth and sustey∣neth them, as Gregory sayth. Also dewe cooleth & tempereth the aire that is made hot by the heat of the day: And if it be made to cléere and thin by the heate of the day, dewe by his incorporation ma∣keth it temperatly sad & thick, as Albu∣masar sayth. Also dew withstandeth and beareth down the strength of venim in venimous beasts, that their venim may not be shed by night so much as by day. Therefore Adders and serpents lurking among grasse, hurt men that passe by but little, while flowres, grasse, and hearbes, be dewed: Also though dew séeme in it selfe sauoured as water, and werish, ne∣uerthelesse in might, effect, & dooing it is most sweete, & cause of honny & of Man∣na in hearbs & flowres. For in some coū∣try of Gréece hony is gendred in flowres that commeth of the dew of heauen: & al∣so Manna in some hearbs, as it is said in Plato: also dew gendred in corrupt aire, is corrupt by corruption of the place, & corrupteth other things: And so such dew insedeth tender flowres, and cor∣rupteth gréene corne, when it is eared, as Gregory sayth: And such corruption is called Erugo and Rubigo.* Also as the Glose saith super primum Ioelis, ther it is said, yt their life of Brugus rubigo shall fret. That which is left of the Caterpil∣ler, the Grashopper shal eate. The can∣ker shall also consume the residue. Ioe. ver. 4. Bruc•s is the broode of long flyes that destroy corne and grasse. Hieroni∣mus saith, that Rubigo is when the ten∣der corne is smitten and burnt with noi∣full dew: and both the cares and stalkes turned into red or foule blacke coulour. And this mischiefe wasteth & destroieth altogether stubble & hey:so far forth, that they be not profitable neither to meate nor to doung. Some men meane yt Ru∣bigo is the mildew.