450 



On Ergot. 



its maturation ; being rarer when wet, frequent when dry. The 

 probable explanation of this reversing of the experience in 

 England and the Continent is, that it is due to the normal moist 

 atmosphere of Ireland, where Mr. Carroll made his observations, 

 being fitted for the germination of the spores of fungi ; while 

 rain would wash the spores off the plants, and a superabundance 

 of water would be unfavourable to their growth. 



A head of Timothy-grass (^Phleum p7-atense, Linn.) is repre* 

 sented in Fig. 9 with an extraordinary number of ergotted ears. 



Fiff. 10. 



Timothy Grass, 

 I'hleum prattnst, 



Linn. 



Barlej' Grass. Jlordevm murinum, Linn. 



