GREENHOUSES 



CHAPTER I 

 A GENERAL SURVEY 



It is not the purpose of this book to furnish 

 detailed information concerning the manu- 

 facture of greenhouse building material, for 

 the cutting and shaping of the materials is 

 the work of the mill and the factory. Its 

 purpose is rather to present such informa- 

 tion concerning the location, adaptation, 

 erection and equipment of greenhouses as 

 will enable the reader, to decide upon the type 

 of house best adapted to his special needs; to 

 supervise or assist if need be, in its construc- 

 tion or erection; and to arrive at some con- 

 clusion as to the equipment most likely to 

 render the service required. 



Greenhouses are the result of an attempt 

 on the part of man to create conditions favor- 

 able to the growth of plants in climates or 

 during seasons naturally unfavorable. They 

 must, therefore, protect the plants from cold 

 and storms, allow for an abundance of direct 

 sunlight, provide for ventilation and in most 



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