482 Mr. Bauer on the Ergot of Rye. 



EXPLANATION OF TAB. XXXIII. A. 



Fig. 1. A young ergot, with its anthers and bracteas, about ten days after fe- 

 cundation : magnified ten times in diameter. 



2. The same young ergot, with its anthers and bracteas removed : magni- 



fied ten times in diameter. 



3. A millionth part of a superficial square inch, filled with the spo- 



ridia, which appear on the external surface of the ergot of Elymus, 

 as well as on those of ergot of rye, and which appear on every part 

 of these plants, and ultimately are washed off by the dew or rain, 

 and mixed with the water : magnified a thousand diameters. 



4. A portion of an anther, bearing the same filamentous fungus. 



5. A group of the filamentous and articulated fungus which infests every 



part of the plants of Elymus, and almost every gramineous plant, 

 whether infected with ergot or not : magnified a thousand times in 

 diameter. 



6. A millionth part of a square inch, filled with the sporidia of the 



external surface of the red or orange-coloured ergot: magnified a 

 thousand diameters. 



Francis Bauer. 



Kew Green, December 14th, 1839. 



