/ 



268 



DRAINING 



Sect. XI. i. 12. 



^ 



■ 



mid commences, are molder than thofe in their vicinity on the Hime 



level ; 



and in 

 poflefs fp 



fequence may generally, if 



cy 



not hollow 



h 



furface ; for thefe moifler p 



e 



& 



d. havincT evaporated more during the day, are bee 



o 



Idcr on their furfiiQ^s than the drier ground 

 midy evenings, u'hich are at 



air over 



are at the fame time calm, the 

 fe moiil: parts of the ground is alfo m^ore loaded 



nty ; and 

 flat ion a ry 



porated moifture ; and on both thef 



bl 



fhew a condenfat 



ther places on the fame 

 As mountains are cold 

 xplained in Botanic 



accounts thefe m>oif]:er fi 

 of aerial vapour fooner 1 



propoi 



to their height, which is 



t) 



)tanic Garden, Vol.1, additional note 26, th 

 mift lometimes commences fooner on them than in the v 



but is feen earlier in thefe fituations over the moifler places, if they 



are en th 



fam 



th th 



drier ones, exadly 



un- 



or valleys ; and may therefore indicate the exigence of fprings 



lefs thefe moifter places confift of hollow bafons containing°water, 



which if not attended to may in all fituations deceive the obferver 



Anoth 



& 



oblervation 

 for as moift 



for detecting fp 



may be made in rimy 



th is a better condu61or of heat than dry 



th, the rime will fooner melt on thofe parts of the foil, which 



kept moift by fpi 



heat of the earth 



duded upwards 

 On 



der it than on other pa 





com 



8 



^y 



fooner be 



m 



ft places to diffolve the rime on the furface 



1 this account the rime is frequently ken on frofty 

 hen the heat of the air is hot much above 32, to lie an h 



on dry cakes of cow-d 



or 



brid 



the com.mon moifl: grround 



o 



planks of wood, th 

 nuch better condu( 



ommon h 

 61 with it 



f 



to 



ben 



h 



But as the heat of the common fprings in this country is 4^', where 

 they exift, the rime is fooner diflblved, than on the ftagnant moif- 



t u re 



^ 



