170 



M. C. COOKE ON BUNT SPORES. 



and it is quite possible tLat in plants, as well as in the lower 

 animals, there may he an alternation of generations. This is, how- 

 ever, merely thrown out as a hint which may be followed out by 

 those who have fewer avocations than myself. Many anomalous 

 appearances, amongst alga;, especially, seems to indicate something 

 of the kind." 



Mr. Berkeley then proceeds to characterise what he deemed the 

 parasite of the germinating Bunt Spores, under the name of 

 Fusisporium inosculans. 



This paper, which is accompanied by a page of illustratrations, 

 was communicated on the 18th January, 1847. 



1. 



2. 

 3. 



4. 



Bunt spores (magnified 400) . 



Bunt spore germinating! 



Producing spores of the second generation (conjugated). 



Spores of second generation conjugated, and producing spore of 



third generation. 

 Spore of third generation producing spore of fourth generation. 



In the Annales des Sciences Naturelles for 1854, Mons. L. R. 

 Tulasne, in "a second memoir on the Uredines," showed that Tilletia 

 caries in the course of its development passed through a veritable 

 alternation of generations, and that the long fusiform bodies, des- 

 cribed by the Rev. M. J. Berkeley, under the name of Fusisjoorium 

 inosculans, were the bunt spores of the second generation, which 

 in their turn produced long elliptical spores of the third generation, 

 which in their turn produced also similar spores of a fourth generation. 



