\ 



p^ 



DISEASES 



Sect. XIV. i. i. 



lefs 



w 



after hot days tender plants are more liable 



flroyed by the coldnefs of 



be d 



Whence in more 



the gardeners (hade their tender vegetables, as the fl 



of 



apricots, in the fpring-frofts from the meridian fun, as well as from 

 the coldnefs of the night ; which is generally the greateft about an 

 hour before fun rife. 



798 I twice obferved feveral rows of o- 



In the hot days of June 1 

 den beans become quite fickly, and many of them to die, from bein 

 flooded for an hour or two with water from 



bourhood 



ch I afcribed more 



th 



a canal in the neic^h 



o 



e 



fudden appl 



of 



great cold, after being much enfeebled, or rendered inirritable, by the 

 exceflive heat of the feafon, than to the too copious fupply of water to 

 the dry ground ; to which fhould be added, that fome plants are more 

 liable to be thus injured than others; as the ftrawberries, youno- cab- 

 plants, and onions, which were in the fame fituation, received 



jrioration by being thus occafionally watered in 



^ 



ba 



^-^ 



benefit 



d 



det 



•J 



that dry feafon 



O 



the 



ry 



J 



wh 



plants h 



been 



(limulus of heat than natural or ufu 



tl 



le 



comes accumulated 



fpirit of 



pofed to a lefs 



o 



be 



and, if they are too fuddenly fubjeded to much 



heat, their too great increafe of a£lion induces inflammat 



d confequent mortificat 



nd death 



as occurs to thofe peopl 



Ex 



who have had too much warmth applied to their frozen limbs 

 perimentsofthis kind were inftituted by Van Uflar j he increafed th 

 irritability of euphorbia peplus and efula by fecludin^^ I'lcrht and hea 

 from them ; and, when he expofed them to a meridian fun, they be 

 came gangrenous, and died in a fhort time. 



This greater or lefs irritability of plants is to be afcribed to thei 

 previous habits in refped to the ftimulus of greater or lefs heat Thu 



the times of the appearance of vegetables in the fpring feem occafion- 

 ally to be influenced by their previoufly acquired habits, as well as by 

 their prefent fenfibility to heat. For the roots of potatoes, onions, 



w il I 



