GREENHOUSE, SMALL. 



236 



GUANO. 



caps in front and the caps behind is per- 

 ceptible in Fig. 3. 



It will be obvious to any one who wishes 

 for a span-roofed house that a greenhouse 

 of this form can be easily made by putting 

 two lean-to houses together, so to speak. 

 That is to say, by making two front eleva- 

 tions and two roofs, as shown in Fig. 2, and 

 doubling the side elevation shown in Fig. 

 3, omitting the upright at the back, for 

 each end of the house all the parts re- 

 quired will be at hand. It must be re- 

 membered that the door, as shown in Fig. 3, 

 should be in the centre of one end instead 

 of the position indicated in the illustration 

 for the door of the lean-to. The two sides 



roughly put together, without entire exclu- 

 sion of the air at pleasure and without 

 means of heating. In the illustration 

 under consideration, cc represents the 

 ground level. At A, A, A, A four dwarf 

 brick walls are raised, the outer ones 

 being lower than the inner ones, so that 

 lights may be placed from the latter to the 

 former on an incline, covering in the 

 cold pits B B on either side of the main 

 structure. The floor of the pits is below 

 the ground-level, but that of the main 

 structure coincides with the ground-line. 

 In the case of the orchard house, if it be 

 desired to gain height, the floor may be sunk 

 below the ground-level, as in the case of 



FIG. 7. GREENHOUSE OR ORCHARD-HOUSE. 



of the roof must be batted against a ridge 

 board running along the top from end to 

 end, and at each end of the ridge board 

 should be a cap by way of finish similar as 

 to the cap shown in Fig 6, but modified to 

 suit the position in the lower part where it 

 is attached to the roof and ends. 



Fig. 7 exhibits a section of a useful form 

 of greenhouse for the amateur, which, by 

 the removal of the stage in the centre and 

 the heating apparatus shown at the sides, 

 may be easily adapted to serve as an orchid 

 house, which see, the main points of 

 difference between a greenhouse and an 

 orchard house being that the greenhouse is 

 neatly made and furnished with warming 

 appliances, while the orchard house is 



the cold pits, but this will be found inconve- 

 nient when it is desired to move the plants, 

 or rather trees, out of the house in summer 

 time, as when the floor of the house is 

 neither higher nor lower than the ground 

 without, the trees can easily be run in and 

 out on a low carriage, whose wheels run on 

 iron plates laid down for the purpose. When 

 the fruit is grown on trees in pots, so that 

 the trees can be moved from one place to 

 another more steadily, or when the trees 

 are kept in the house always, the floor of 

 the house may be sunk below the ground 

 level as described. 



Guano. 



This, which is nothing more than the 



