From an Example of this Nature any one may eafily difpofe himself to keep a Weather Book of the Country he refides in; and, by comparing the Motions of the Quickfilver and Spirit with the Weather at the Times of Obfervation, may, with a little Practice, be able to prejudge nearly what Weather will happen. In Tome other Papers I fhall explain a little more the Use of these Inftruments, having prevail'd upon some curious Perfonages to keep the fame kind of Register in diverse Parts of the Kingdom, who have promis'd to fend me fuch Obfervations as they make in the Course of these Experiments. I think it would add much to their Value, if we could be affur'd by a conftant Remark, that upon every Change of Wind there is a Breeze, a Gale, or brisker Motion of the Air, than was before, and whether the Wind does not always change in, or immediately after a Storm of Thunder; and those who have an Opportunity of making an Obfervation at fix a Clock every Morning, would, I think, very much illuftrate an Undertaking of this kind.

VOL. II.

Y

CHAP.

CHAP. V.

Obfervations concerning the propagating Plants from the hottest Climates, and of naturalizing them with us; as alfo proper Rules for gathering of Seeds a"broad, and of the Method of transporting them from one Country to another with Safety.

SIR,

S

To Mr. BRADLEY, &C.

INCE you are arriv'd to that Perfection, as to be able here at Home to make Climates anfwerable to any whatever affign'd Abroad, and produce equatoreal Heat in the Latitude of fifty one and a half; and fince by that Means we fhall be able to propagate in England whatever Fruits, Plants, or Flowers, which being either useful, curious, or profitable, are produc'd in the warmer Climates; and which, I doubt not, but in time it will be thought a national Interest to have naturaliz'd here. I believe, it will not be improper for Seamen to cultivate a Correfpondence with you, fince thereby we may perhaps