28 HUMPHREY 
Normal Air-dry Loss of Weight After Two 
Targionia. Weight. Mouths Desiccation. 
lot I 0.055 g- 0.0035 g- 
lot 2 0.070 g. 0.0150 g. 
lot 3 0.052 g. 0,0066 g. 
lot 4 0.075 g. 0.0046 g. 
lot 5 0.055 g. 0.0017 g. 
Normal Air-dry Loss of Weight After Four 
Cryptomityium. Weight. Months Desiccation. 
lot I 0.050 g. 0.00250 g. 
lot 2 0.040 g. 0.00310 g. 
lot 3 0.040 g. 0.00325 g. 
lot 4 0.060 ¢g. 0.00230 ¢g. 
lot 5 thrown out as defective. 
Normal Air-dry Loss of Weight After Two 
Riccia glauca. Weight. Months Desiccation. 
lot I 0.030 g. 0.00170 g. 
lot 2 ; 0.035 &. 0.00200 g. 
lot 3 0.030 g. 0.06260 g. 
lot 4 0.030 g. 0.00310 g. 
lot 5 0.025 g. 0.00330 g. 
Normal Air-dry Loss of Weight After Four 
Fossombronia. Weight. Months Desiccation. 
lot I 0.025 g. 0.0020 g. 
lot 2 O1O208ocen 0.0020 g. 
lot 3 0.040 g. 0.0020 g. 
lot 4 0.030 g. 0.0026 g. 
lot 5 0.025 g. 0.002I g. 
Normal Air-dry Loss of Weight After Four 
Porella. Weight. Months Desiccation. 
lot I 0.420 g. 0.0215 g. 
lot 2 0.320 g. 0.0180 g. 
lot 0.350 g. 0.0150 g. 
lot 4 0.402 g. 0.0170 g. 
lot 5 0.402 g. O.OI51 g. 
The wide discrepancies existing between the weights of dif- 
ferent lots of Fimbrzarza and of Zargzonza are probably 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 Cryptomitrium, Lossombronia and the others 
where the plants were of more uniform size the discrepancies 
are slight. 
a 
b= 
