4S8 CASUALTIES OF VEGETABLES. CHAP. *XIT. 



and about the same season of the year, which 

 totally destroys the crop. In the summer of 180Q, 

 I had watched the progress of the growth of a field 

 of wheat on rather a light and sandy soil, merely 

 from having had occasion to pass through it every 

 Sunday in going to serve a church. It came up 

 with every appearance of health, and also into ear, 

 with a fair prospect of ripening well. I had taken 

 particular notice of it on a Sunday about the be- 

 ginning of July, as exceeding any thing I should 

 have expected on such a soil. But on the following 

 Sunday I was surprised to find a portion of the 

 crop, on the east side of the field, to the extent of 

 several acres totally destroyed ; being shrunk and 

 shrivelled up to less than one-half the size of what 

 it had formerly been, with an appearance so wither- 

 ed and blasted that I for some time imagined I had 

 got into the wrong field. The rest of the field 

 produced a fair crop. 



Third The third species attack the leaves or stem both 



of herbaceous and woody plants, such as Eu- 

 phorbia CyparissiaS) Berberis vulgar is, and Rham- 

 nus catharticus, but more generally Grasses ; and 

 particularly our most useful grains, Wheat, Barley, 

 and Oats. It generally assumes the appearance of 

 a rusty-looking powder that soils the finger when 

 touched. On the 25th of March, 1807, I ex- 

 amined some blades of Wheat that were attacked 

 with this species of blight ; the appearance was that 

 ot a number of rusty-looking spots or patches dis- 



