PLATE 18. 
Mo. Bor. GARD. BULL., VOL. 4, 1916. 
NEW GREENHOUSES AT IOWA STATE COLLEGE, 
The range consists of twelve houses of iron construction and comprises approximately 22,000 
square feet under glass. It is used for experimental and instructional work in vegetable crops and 
floriculture. The building immediately adjoining on the north is the new horticultural laboratory. 
