90 



GARDENING FOR PLEASURE. 



attach to dwellings ; this is 16 feet wide and 30 feet in 

 length. Its ground plan showing the arrangement of the 

 benches and walks, is given in fig. 39. Such a structure 

 in every way complete, heated with Hitchings Base Burn- 

 ing water-heater, should not exceed $600. 



CHAPTER XXVIII. 



A DETACHED GREENHOUSE OR GRAPERY. 



In cases where more extended glass structures are de- 

 sired, they are better if detached from the dwelling. 

 The structure now given in figs. 40 and 41 is called a 

 curvilinear span-roofed house, 100 feet in length by 20 in 

 width ; fig. 40 shows the end view and plan, and fig. 41 

 gives sufficient of the elevation to show the end and a 

 part of the side. The ends should face north and south, 

 so that the distribution of the sun's rays will be equal on 

 each side. Of course there is nothing arbitrary in the size, 

 it may be made 50, 75, or 100 feet in length, or 20 to 25 

 feet in width as desired, and may be used either for the 

 purposes of a vinery for the growing of foreign grapes, or 

 for a conservatory as desired. All the walling from the 

 surface of the ground to the glass of a greenhouse, had 

 better be made of wood, unless the walls are made very 

 thick when built of brick or stone ; the continued warfare 

 in winter between a zero temperature outside, and 60° to 

 70° inside, will in a year or two destroy brick or stone 

 walls. "When the walls are formed of wood, the best way 

 is to place locust posts at distances of four feet apart, 

 and nail to these a sheathing of boards ; against the 

 boards tack asphaltum or tarred paper, and again against 

 that, place the weather-boarding. This forms a wall 



