32 2 



DISEASES 



Sect. XIV. r.4. 



f?.id to appear to be fplit, and the growth of the plant to be tnuch 

 injured. He dcfcribes the fungus to be linear-oblong, tawny-black. 



4. C]avus, ergot, or fpur, occurs when feeds g 

 rns, black without, as in fecale, rye, and in car 



-\-f 



This difeafe 



frequently aftedls the rye in France, and fometimes in Encrland in 

 moift feafons, aiid is called ergot, fpur, or horn-feed; the aiain be- 

 conaes confiderabiy elongated, and is either ftraight or crooked, con- 

 taining black meal along with the white ; and is faid to appear to be 



pierced by infeil 



h 



ppofed to caufe the difeaf( 



Mr. Duhamel afcribes it to this caufe, and compares it to o-aljs 01 

 oak-leaves J but this has not yet been eftabhfhed by fufficient obfer 

 vations. By the ufe of this bad grain amongft the poor, difeafes hav 

 been produced, attended with great debiHty, and mortification of th 

 extremities, both in France and England. Did. Raifon. Art. Sieo-k 

 Philof. Tranfaa. Vol. LV. 1 06. c> 



5. Uftilago, fmut, when the fruit jnftead of feed prod 



black 



m 



as m 



wheat, barley 

 laid on this difeafe in the 



fcorzonera 



po 



M 



Did. Raifon of Bomare. A 



Bled, wh 



recommends keeping the grain, before it is fown, in brine : which 



^^ 



rally dlreded to have fo much fait added tc 

 ^afe its fpecific gravity, till an e^s: will fwim 



fleep the feed- wheat in lime 



•, as may 

 fecond ly. 



thirdly, which he thinks 



moft efficacious, in an alkaline ley made by adding pot-afh 



water, 



In the fyftema naturae of Linneus under the article Vermes, Zoi 

 phyta. Chaos uftilago, there is a quotation from Munchhaufen, th 

 the uftilago is a black powder, which is found in the deftroved sraij 



of barley, wheat, and other grafl 

 fcorzonera. 



Alio that th 



for fome days pafle 



?s ; and in the florets of tragop 

 powder being macerated in warm \ 



3 



imalcules, hv 



a to 



colour, and playing about like fifli, as may be feen by a microfcop 



and 



