18 How TO Grow Cut Flowers. 



gutter, should be given a coat of paint. All the roof 

 work should be given a thorough cleaning and painting 

 once in two years, and some consider it economy to 

 paint thoroughly every year, because every particle of 

 light that can be obtained during the winter months is 

 desirable, and both cleaning and painting add so largely 

 to this result, that one or both should be adopted. 



CHAPTER 11. , 



VENTILATION, HOW CONSTRUCTED. 

 First, I would have it continuous on the south roof, 

 and from 20 to 36 inches wide. Never ventilate on the 

 north side unless hinged at the top, otherwise, when 

 open, the sun will be admitted in sueh a way as to 

 burn the plants on the north bench. An error of this 

 kind will necessitate the protection of the bench by 

 shading with some thin material like cheese cloth 

 under the ventilator, and as far as the opening extends, 

 as the writer has found from experience. These con- 

 tinuous ventilators can be made of various lengths, 

 according to the size of glass used. It is usual to 

 hinge them at the bottom, and if the upper edges are 

 doweled, all will move alike when raised, and the open- 

 ing will be uniform throughout the entirj length of the 

 house. For raising and lowering this there is but one 



