A-B-C OF VEGETABLE GARDEXIXG 



sunny or warm day tiie sash should be hfted 

 an mch or tvv^o^ about ten o'clock, and left 

 m that condition until about two. Care must 

 be taken, however, to see that the wind does 

 not blow from a quarter that will drive the 

 cold air in upon the plants. The admission 

 of a cold blast will often be fatal to the ten- 

 der plants. 



Great caution must be exercised in regard 

 to ventilation. The aim should be, at all 

 times, to admit pure, fresh air without al- 

 lowing cold to enter with it. This may seem 

 a somewhat paradoxical statement, for at 

 fu'st thought it will seem impossible for air 

 from without to come in without taking along 

 with it the cold air which is in circulation 

 outside, but when one takes into consideration 

 the fact that the warm air inside the hotbed 

 meets the air from out of doors at the point 

 of entrance it will be understood that it 

 repels or counteracts it to an extent that 

 makes it safe to open the sash slightly when 

 the outside temperature is nearly down to 

 freezing-point. The hotbed-owner must study 

 existing conditions and be governed accord- 

 ingly. It is impossible to lay down am^ 

 hard-and-fast rules to apply in this case. 



On cold nights the hotbed sash should be 

 covered with blankets or old carpeting to 



