PROCEEDINGS OF SOCIETIES. 347 
plants absorb organic matter in a state of solution, there being abun- 
dance of such soluble matter not yet resolved into its ultimate 
elements, floating in the sea. — Prof. Thiselton Dyer thought the 
Williamson.—He described a series of specimens which he believed to 
belong to the group of Ferns, beginning with the examples to which he 
had given the generic name draxylon. He stated that he had 
the absence of exogenous growths on the other, meant something more 
than mere differences of size, because he found small plants possessing 
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* This paper will be published in the ‘* Quarterly Journ. Microse, Science,” 
