Prakger — The Buoyancy of the Seeds of some Britannic Plants. 57 



are not very complete. Gappy 's results do not help much, as he tested but 

 few fruits of this sort ; and in those he recorded it is not quite certain what 

 state he assumed to be the natural dispersal-condition of the species. 

 However, the following results are suggestive : — 



Buoyancy of Fleshy Fkuits. 



[Time is given in days. X = sinks at once.] 



