"^III. 



2o 



•'t Of 



Its 



' <^5I1 cot 



■ ™J- the,. 



veo- 



e 



r 



°f heat i 



getabl 

 " of thei 

 ^^e death 

 ■e bulk of 

 ^uch vio- 

 th w 



water. 



egetabi 







es 



» 



and other 

 Alaj bj a 



;nded and 

 r or more 

 reens, are 

 this ac- 



1 



b on erai- 



er in 



the 



roy 



vege- 

 otber 



: or 



water, 



e watery 



fplrit, 



Ik; 



) 



al fluids 



J 



or 



futuf^ 



Sect. XIII. 2. 2. 



ELECTRICITY. 



3^5 



The expanfion 



of ice neverthelefs well accounts for the greater 

 .../chief which is fometimes done by vernal froft, when preceded by 

 ■ much rain, or mift, or dew. as by hoar-froft, than by the dry frolts 

 without rime, called black frofts ; as the vegetable veffels are then 



fuller of fluids 



h 



But when mift or dew attends a frofty 



o 



but 



preceded it, I fuppofe a hoar/rofl may be lefs 



black froft 



the cafe of 



the buds of trees, or on y 



rafs, bein.^ inftantly produced, covers them 



of h 





a bad conduct 



„_.-, .-d prevents them from being expofed to fo great cold, as 

 the continuance of a black frofl without hoar or rime. See Sed:. 



XV. 3. 5 



1 

 J 



Mr. Laurence, In a letter to Mr. Bradley, complains, that the dal 

 mift attended with a froft on May- day had deftroyed all his tend 

 fruits ; though there was a fliarper froft the night before without 



mift, that did h 

 throw 



no injury ; 



d adds, that a garden not a ft 



from his own on a higher fituation, being above the dale-mift 



had received no damasre. Bradley, V. II. p. 23 



From this inft 



fad it aopears, that very low Situations even in this cold climate 



proper for the purpofes of a garden 



And on th 



rarj 



very hioh fituations are equally improper on account of 



old, and the confequent backwardnefs of th 

 See Sea. XV. 3. 5 



table prod u 61 



/ 



Hence fruit trees asainft a wall, which are covered with cop. no- 



o 



a 



ftones projecling fix inch 



r them, are lefs injured by the vernal 



frofts ; becaufe their being thus Iheltered from the defcending night- 

 dews has prevented them from being moift at the time, they were 

 frozen ; which circumftance has given rife to a vulgar error amongft 

 gardeners, who fuppofe froft to defcend. 



■ Hence as the freezing winds of this country are from the north- 

 eaft, a gardener fliould extend his rows of young peas and beans from 

 the fouth-eaft.to the north-weft, and ralfe a mound of earth behind 



them, and might flielter them occafionally with ftravv^ placed on the 



R 



r 



ground 



fbe 



