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10 Kbport of the Department of Entomology of the 



the liorizontal ont". Tl'Ls wns done to bring all wei^lit as near 

 the base as possible. See Plate XXIII. 



The separate sides were hinged together in pairs, the hinges 

 being placed outside; after which two pairs were hinged to the 

 third, the hinges being placed inside. This allowed of the fold- 

 ing of the sides back and forth on one-another so that the whole 

 when closed occupied no more surface space than did one rect- 

 angular side. It also permitted of the front being opened as a 

 double door to a width equal to the shortest diameter of the 

 box. Two pairs of 4-inch backflap hinges were required on each 

 pair of sides and also for fastening the pairs together. 



The top was constructed in three parts, one rectangular and 

 two triangular frames. Except in length and braces the center 

 or rectangular portion of top was made the same as one of (he 

 sides. At first it was only braced by means of two diagonal 

 braces; later a triangular cross-brace was added. See Fig. 2, 

 Plate XXIV. This not only prevented sagging of the cover but 

 raised it so that water would run off; at the same time it formed 

 The remaining parts of the top frame-work consist of two isos- 

 celes triangles, the two equal sides of which were of the same 

 length as the width of one side of the fumigator. These triangles 

 were hinged to the rectangular piece. P.y nailiug a 1x3 inch rail 

 around outside the top frame and tacking a small cleat on the 

 lower face of this frame, a one-and-a-half inch groove one inch 

 deep was formed which fitted top rail of the side frames. See 

 Fig. 3, Plate XXIV. Hooks and eyes were used to fasten the 

 top to the side frames and also to secure the doors. 



This top not only held the frame in shape, but so braced the 

 upper portion that it was only necessary to use a few cross 

 braces near the base to make the whole rigid. The arrauire- 

 ment of these cross braces is shown in Fig. 3, Plate XXIV. 

 They were made of 1 x 2 inch spruce held in place by means of 

 eight-inch shutter hinges. The latter allowed of the braces 

 being removed when the fumigator was folded. They also 

 allowed of the removal of the front brace when placing the 

 fumigator around a tree. 



