32 



Various remarks were made by Mr. Yates, Mr. Neill, 

 Mr. Balman, and Dr. Brett, who gave Liebig's opinion, 

 that a principle of the potato analagous to animal albumen 

 was converted into casien. This casien he supposed became 

 decomposed, and by contact caused the same change to take 

 place in the other principles of the plant. 



The President stated that certain species of plants, after 

 a determinate period of existence, die out, and require to be 

 replaced by other species, which might be the case with the 

 potato. 



