28 



Targionia. 

 lot I 

 lot 2 

 lot 3 

 lot 4 

 lot 5 



Cryptom iiyiu m . 

 lot I 

 lot 2 

 lot 3 



lot 4 

 lot 5 



J?tccta glauca. 

 lot I 

 lot 2 

 lot 3 

 lot 4 

 lot 5 



Fossombron ia. 

 lot I 

 lot 2 



lot 3 

 lot 4 

 lot 5 



lot I 

 lot 2 

 lot 3 

 lot 4 

 lot 5 



The wide discrepancies existing between the weights of dif- 

 ferent lots of Fimbriaria and of Targionia are probabl}'^ due to 

 the fact that certain lots were largely made up of thick, bulky 

 plants capable of retaining more moisture than the smaller 

 thinner plants composing other lots. Then too, some allowance 

 must be made for small particles of soil clinging to the rhizoids, 

 though care was exercised in the removal of all foreign matter 

 from the plants employed in the experiment. It will be noticed 

 that in the case of Cryptomilriuni, Fossombronia and the others 

 where the plants were of more uniform size the discrepancies 

 are slight. 



