316 HOT-BEDS. 



AlRING. 



Air should be freely given when the weather is warm 

 and sunny ; on cold, cloudy days the sashes should be 

 kept closed unless it is necessary to get rid of damp, 

 which may be effected by opening the frame about an 

 inch at the top. If the weather is very cold, the mats 

 should not be removed from the sashes. 



The best way to ventilate is to draw the sash down 

 from the top. If, however, more air is required, prop 

 up the sides ; which, by securing a draught through, 

 will effectually carry off the surplus heat, an inch will 

 be high enough. 



As the season advances, and the days become warm 

 and sunny, the sashes may be entirely removed after the 

 sun becomes high ; replacing them at night and in stormy 

 weather. And finally, they may be removed altogether ; 

 which will much contribute to the sturdiness of the 

 plants. 



PROTECTION. 



If we do not start our hot-bed until the fir** of 

 April, we shall probably need no protection other than 



