6. Whether the Air be dry or moist; hot or cold; clear or foggy; thick or thin; heavy or light; and especially, whether the Weather be more or less variable than ordinarily; or whether it be subject to great and sudden changes, that may probably be imputed to the Mineral and Subterraneous Steams; and what they are? {332} _About the second Title._ 7. Whether the _Soyle_ that is neer the Surface of the Earth, be Stony; and, if it be, what kind of Stones it abounds with? Whether it be Clayie, Marley, Chalkye, &c. And, if it be of several kinds, how many they are; and by what properties they are distinguish'd? _About the third Title._ 8. By what _Signs_ they know or guess, that there is a Mine in such a place? 9. These Signs are _either_ upon the Surface of the Earth, _or beneath_ it. To the _former_ belong these _Quaeries_. 10. Whether the Ground be made barren by Metalline or Mineral Effluviums? 11. Whether it be observed, that Trees and other greater Plants seem to have their tops burnt, or other leaves or outsides discoloured? or whether there be any Plants, that do affect to grow over such Mines; and whether it have been tryed, that other Plants, that would prosper in the adjacent places, will not be made to grow and thrive there? 12. Whether the Stones and Pebles, that are wash'd by the Brooks, Springs, or other Waters, have any colour'd substance left upon them; and if they have, of what colour, weight, &c. these adherences are? 13. Whether the Waters of the place proposed, do by their tast, smell, ponderousness, &c. disclose themselves to contain Minerals? And, if they do, what Minerals they or their residences, when they are evapourated away, do appear to abound with, or to participate of? 14. Whether _Snow_ will not lye, or _Frost_ continue so long, or _Dew_ be generated or stay upon the ground in the place proposed, as on other neighbouring grounds? 15. Whether the _Dew_ that falls on that ground, will discolour white Linnen or Woollen-Cloths, spred overnight on the {333} surface of the ground, and employed to collect the Dew? And whether the _Rain_ that falls there, and may be supposed to come thither from elsewhere, will discolour such Clothes, or afford any residence of a Mineral Nature? 16. Whether the Place be more than ordinarily subject to Thunder and Lightning, and to sudden Storms or Earthquakes; as likewise to Nocturnal Lights and fiery Meteors. 17. Whether Mists use to rise from Grounds stored with Minerals? What is observable in them, and what Minerals they signify, and may be supposed to be produced by? 18. Whether the _Virgula Divinatoria_ be used to find out the Veins of proposed Mines; and, if it be, with what success? 19. What other Signs above ground afford probability of Mines, or Direction for following a Vein over Hills, Valleys, Lakes, Rivers, &c. The _second_ sort of _Signs_ belonging to these _Quaeries_, are such as follow.