88 



THE CANADIAN HORTICULTURIST. 



pailful of water syringed onto the 

 plants will easily destroy the larvpe. 

 This should be done in the beginning 

 and middle of June and is quite safe. 

 Yours obediently, 



J. Fletcher, 

 Ottawa, Feb., 1885. Entomologist. 



A SMALL GREENHOUSE. 



The following is a plan of a small 

 amateur greenhouse, that may be ac- 

 ceptable to some of your readers, from 

 Part 5, " Amateur Work ; or. Help 

 and Guidance for Self-helpers ; Every 

 Man his own Mechanic :" 



A convenient size for the house (in- 

 cluding the potting-shed, which is at 

 the north end), is about 18 feet long 

 and 8 feet wide, outside measurement. 

 In referring to the drawing, it will be 

 seen there is a gi'ound -plate running all 

 round the base ; this is lettered A A, 

 and is 1^^ inches deep and 5 inches 

 wide, and is formed into a frame 8 feet 

 1 inch wide and 18 feet 1 inch long. 

 Securely fastened at the coi'ners, there 

 are foiir upright posts, C, which are 

 4 inches square ; these ai-e kept in a 

 vertical position by eight struts, J, 

 which greatly help to stiffen the frame- 

 work, until the boards are fastened 

 over it. The space between the end 

 posts is divided on either side of the 

 house into five equal spaces by four 

 posts, three of them, D, being 4 inches 

 by 3 inches, and the fourth, marked 

 X, 4 inches by 4 inches. This latter 

 divides the potting-shed ft'om the 

 greenhouse, as shown in Figs. 2 and 5. 

 These are all 4 feet 9 inches long, and 

 as they are mortised into the wall- 

 plate at the top, and the ground-plate 

 at the bottom, each of which is 1^ 

 inches thick, the space between the 

 wall-plate and the ground-plate is 4 

 feet 6 inches ; the wall-plate, B, is 4 

 inches wide. Six other posts, D, 7 

 feet 4 inches long, 3 inches thick, and 



4 inches wide, must be px-ovided. 

 These are all mortised at one end to 

 the ground-plate, and at the other are 

 nailed to the rafters, E. Of these two 

 at either end form the door-posts, of 

 which the door-ways are 6 feet 3 inches 

 high by 2 feet 3 inches wide. The 

 rafters, lettered E and F, are nailed at 

 one end on the wall-plate, and on the 

 other to the ridge-board, H, which is 

 18 feet 3 inches long, 6 inches deep, 

 and 1 inch thick. Those lettered F of 

 the form shown (Fig. 7) which repre- 

 sents the actual size of the section, they 

 are all 4 feet 9 inches long. These 

 rafters can be purchased of the section 

 shown, and sliould be all carefully 

 placed at equal distances (see Fig. 2) 

 when the width must be measured and 

 the glass ordered accordingly. 



To ventilate the house, about 9 inches 

 next to the ridge-board on one side 

 should be unglazed, and the space cov- 

 ered with half-inch board, hinged in 

 four lengths opened from the inside, as 

 shown at L (Figs. 3 and 6), and the 

 same must be adopted at the bottom of 

 the opposite rafters, where four lengths 

 of boards M are hinged to the wall- 

 plate B. The house should be glazed 

 with glass 16 ounces in weight to the 

 square foot. With x-egard to doors the 

 amatexxr had better get them made by 

 a carpenter to look well. The framing 

 of the sides must be covered with ^ or 

 I inch boarding taxTed or painted on 

 the outside, and the space between the 

 inner and outer boards filled with saw- 

 dust, which is a slow conductor of heat. 

 As the house that has been desciibed 

 has a span roof and a door at each end, 

 zinc or iroxa gxxttering, supported on 

 bx-ackets, must be placed immediately 

 under the eaves along the front and 

 back. A sliding pannel in the pairti- 

 tion between the potting shed and the 

 house will be found useful for passing 

 in newly potted plants, &c., without 

 carx-ying them round in the front of 



