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building are the heaters, two in number. This building itself, 

 and houses A, B, C and D are heated by steam. The remainder 

 of the plant it heated by hot water, but it is piped in the modern 

 system, and either hot water or steam can be used as may be 

 thought best. It is hoped that some definite observations upon 

 the relative merits of hot water and steam, which shall be alter- 

 nately generated in the same apparatus, can be undertaken here 

 very soon. This basement also contains a mushroom cellar, which 

 lies directly under the photographic laboratory. Across the east- 

 ern end of these houses is a low building, twenty-two by forty feet. 

 It is a large work-room in which the potting for all the houses is 

 done, and which contains benches and tools for steam and water 

 fitting, a portion of the carpenter tools, etc. It also contains an 

 engine to be used for running pot washing machines and other 

 apparatus. Across one end of this building is another mush- 

 room bed. Lying still to the east of this series of houses, and 

 not shown upon the plan, is another small mushroom pit. 



Various styles of construction have been employed in the build- 

 ing of these houses, and various kinds of glass have been used, 

 so that together they afford an excellent test of various methods 

 of building greenhouses. The lower series, including houses E, 

 F, and G, is glazed without the use of putty. The roof of house 

 F is dividen into four sections, each of which contains a different 

 quality and thickness of glass. It is proposed to keep an account 

 of each section during a number of years for the purpose of ascer- 

 taining what are relative amounts of breakage by hail and other 

 agencies. In house G it is designed to test the value of other 

 coverings than glass for forcing-houses. It now has a roof made 

 of oiled paper, but this is a failure. We shall soon put on a roof 

 of oiled muslin. The houses, taken together, make a remarka- 

 bly compact and easily handled plant. Many different conditions 

 of exposure, heat, sun-light, etc., can be secured, so that exceed- 

 ingly various operations can be carried on in them. 



Aside from this equipment, the station has a large barn 

 sixty by eighty feet in dimensions, in which are two storage cel- 

 lars, a large grafting room and tool room, a large basement, 

 storage rooms for wagons, tools and fertilizers, and a number 

 of stables, part of which are rented. An elevation of this barn is 

 seen in Fig. 7. 



The grounds belonging to the horticultural division, com- 



