THE ALTERNATE SPLEENWORT 
349 
and that no water is allowed to become stagnant about its 
roots. The same soil as that suggested for Septentrionale 
and the same manner of planting will be the best for this 
species. Under glass it will succeed if care be taken that 
the atmosphere is not kept in a very damp state around it. 
The ventilating hole through the knob of a bell glass will be 
found to secure a sufficiency of ventilation, provided the plant 
be periodically allowed to have air by the taking off of the 
glass covering for a little while. 
