480 Mr. Bauer on the Ergot of Rye. 



EXPLANATION OF TAB. XXXII. 



Fig. I. A front view of a sound germen of rye, about four days after fecun- 

 dation: magnified eight times in diameter. 



2. A side view of a longitudinal section of the above germen : magnified 



in the same degree. 



3. A front view of a longitudinal section of the base of the above germen, 



or rather young grain, which shows the first beginning of the for- 

 mation of the embryo : magnified sixteen times in diameter. 



4. A front, and Fig. 5. a back view of an infected grain, from the same 



ear as Fig. 1 ., soon after fecundation, when the disease makes its first 

 external appearance : magnified eight times in diameter. 



6. A front view of a transverse section of the above infected grain, cut at 

 /. letter A, Fig. 7. : magnified sixteen times in diameter. 



7. A side view of a longitudinal section of the same infected grain : mag- 



nified eight times in diameter. 



8. Front view of a section of the same infected grain, cut at letter B, 



Fig. 7. : magnified sixteen times in diameter. 



9. A side view of a longitudinal section of an infected grain, about eight 



or ten days after fecundation ; the young ergot is enlarging, and has 

 already torn up the integument of the germen, and detached it from 

 the base: magnified eight times in diameter. 



10. A full-grown ear of rye, strongly infected with ergot : natural size. 



11. A full-grown ergot, within its floret : magnified five times in diameter. 



12. A transverse section of the same: magnified five times in diameter. 



13. Albumen of a sound grain of rye: magnified two hundred times in 



diameter. 



14. Internal substance of the ergot of rye : magnified two hundred times in 



diameter. 



Observations. — Thus far I had carried my investigation and illustrations of 

 that singular disease the Ergot in Rye, during the years from 1805 to 1809, and 

 which illustrations have been for many years in the British Museum ; and 



