DEC.] GREEN-HOUSEBULBOUS ROOTS. 341 



portions of air all over the house ;. and though there 

 is a little frost, while mild, and the sun shining, the 

 plants will be benefited by a small portion of air for 

 the space of an hour, or even for half of that time. 



Whatever state the weather may be through the 

 winter, never keep the house long shut up. Thirty-six 

 hours, or at most sixty, should be the longest time at 

 once ; rather give a little fire heat. 



We are no advocates for keeping plants long in 

 darkness, and never think that our plants are receiving 

 justice, if kept longer in darkness than two nights and 

 one day. 



Respecting watering and other necessary operations, 

 see next month particularly. 



BULBOUS ROOTS. 



Those that were plunged in the garden, if not lifted 

 and brought under cover, should now be done without 

 delay. Clean the pots, and stir up the surface of the 

 soil. Hyacinths grow neatest by being kept very close 

 to the top glass ; the flower stems are thereby stronger 

 and shorter. Water moderately until they begin to 

 grow freely. 



