CHAPTER XLI. 



VENTILATING THE CAMELLIA HOUSES. 



THIS is another very important matter to be considered 

 in growing this plant, as it seldom receives as much air as 

 is required to make it thrive well. 



During the winter my Camellia houses are aired every 

 day that the sun shines on them, whether the thermometer 

 outside denotes freezing or not. 



Keep the temperature inside the house low before 

 airing. 



Do not allow the temperature, as many do, to run up 

 to eighty or one hundred just before airing. 



This is more heat than the plant requires at any time. 



You cannot perhaps always regulate the heat from the 

 pipes or flues, having had strong fires during the previous 

 night, but you can regulate the temperature during the 

 day by ventilation. 



In ventilating, do not pull the sash half way down on 

 the houses, or throw open all the ventilators as though it 

 were a summer day, as your plants will not stand a 

 draught of air, neither will they thrive if chilled. 



Ventilate for plants as you would for your children, if 

 they were kept in a close room. 



Open your sash or ventilator according to the temper- 

 ature you have in the house, not forgetting that even if 

 freezing outside, opening the sash a quarter or half an 



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