74 DISTEMPERS OF CORN. Part I. 



trouble. The experiments v/hich we fliall give hereafter, will prove 

 that they do. 



To the lecond article, Mr. Titll iaj-s, that the culture of land in 

 his way, coils lefs than in the old hufnandry. This is true of an 

 equal quantity of ground cultivated each way : but as, in the new 

 huibandry, all the lands of a farm are to be cultivated, and in the 

 old hufoandiy, the tbdrd part receives no culture whilft under wheat, 

 and the third that is under oats, is generally plowed but once; there 

 is but one third of the farm vi'hich receives a thorough culture, and 

 that is the part which is under fallow for v/heat. In this light, it is 

 not polhble but that a farm mull coll more in cultivating it according 

 to the new hufbandry, than the old. The only queftion again is, 

 whether the greater produce in the new hufbandry, will recompenfe 

 the additional charge. 



With regard to the third article, it may be obferved, that while 

 the corn is in the ground, it is expofed to many accidents, fome of 

 which cannot be prevented : fuch as hail, which breaks it down ; 

 violent winds which make it {hed, perhaps the very night before it 

 is reaped ; continual rains, which make the ripe grain grow ; fevere 

 frofts in the winter, which damage the roots, and untimely frofls 

 which hurts the ear when fpindling ; hot glooms which mildew the 

 corn, &c. It does not appear that any culture can prevent thefe 

 accidents : but we fliall fliew in the following articles of the diftem- 

 pers of corn, and of weeds, which fometimes rob us of a third of 

 our crop, that they are lefs to be feared in the new huibandry, than 

 in the old. 



CHAP. XV. 



Of the DJjlempers of Corn. 



MR. Duhamel is much more diftind; in his account of the 

 diftempers of corn, than any Engliih writer has hitherto 

 been. Though they may be reduced to miUeiv, blight, znd f/iut, 

 he has diftinguifhed them by feveral other names, which we ihall 

 endeavour to explain as they occur ; and, taking them in the above 

 order, we fhall begin with the 



MILDEW; which the French call roiit/k or ruf. 



THIS diftemper attacks the blades and ftems of corn. It covers 

 them with a powder of the colour of ruft of iron, whilfl: they 

 arc in their greateft vigour. This fubftance does not adhere ftrongly 

 2 to 



