GREENHOUSES 



THEIR CONSTRUCTION and EQUIPMENT 



BY 

 W. J. WRIGHT, 



Director, New York State School of Agriculture 



at Alfred University. Formerly Assist- 



ant Professor of Horticulture at the 



Pennsylvania State College 



ILLUSTRATED 



NEW YORK 



ORANGE JUDD COMPANY 



LONDON 



KEGAN PAUL, TRENCH, TRUBNER & CO., Limited 

 1917 



