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❧Obseruations vpon the Kalender glasse.
THe propertie of this water is to ascend with cold, and descend with heate, vpon the least and euery change of the outward ayre, cer∣tainely.
Secondly, the sudden falling of the water is a certaine signe of raine; for example, if the water fall a degree or two in seuen or eight houres, it will surely raine then presently, or within tenne or twelue houres after.
Thirdly, if the water fall in the night season, it will surely raine, for example; if the water be fallen any lower in the morning at Sun-rising, then it was ouer night after Sun-setting, it will surely raine that day following before midnight: Probatum est.
Fourthly, you must marke at what degree the water standeth when it first begin∣neth to fall against raine; for vntill it riseth vp againe to the same degree from whence it first fell against raine, the weather will still bee rainie more or lesse: Probatum est.
Fiftly, so long as the water continueth certaine at any one degree whatsoeuer, so long the weather will continue certaine at the same stay that it is then at, whether it be faire or foule, frost or raine; but if the water rise or fall a degree or two, and so standeth, the weather will presently change: Probatum est.
Sixtly, Note that at the figures of 1. 2. and 3. is the extreame heate of the Summer.
At 4. and 5. not so hot,
At 6. more temperate,
At 7 is a degree more hot then cold,
At 8. is the medium, or very temperate,
At 9. is a degree more cold then hot,
At 10. is a frost certainely,
At 11. and 12. harder frost,
At 13. and 14. store of Ice vpon the Thames at London, and other riuers in the Countrey,
At 15. boates cannot passe for Ice,
At 16. men may goe ouer the Thames on the Ice on foote, Porbatum est.
Seuenthly, Note that so long as the water continueth aboue the figure of 10. so long the frost will last, but if the water fall below the figure of 10. and so standeth, the frost will breake certainely.
Eightly, Note that in the time of frost, the water standing aboue the figures o•• 11. or 12. the sudden falling of the water a degree or two, is a certaine signe of Snow, or sleeky weather certainely.
You may also know the temperature of your body, whether your body bee hotter or colder, more at one time then at another, by holding your hand vpon the head of the glasse.
These rules are all certaine and truely proued by Iohn Slade dwelling at the blew Bell at Lambith.