New York Agricultural Experiment Station. 309 



a hexagonal folding pumigator. 



During the winter of 1900-1901, a folding hexagonal fumiga- 

 tor was constructed and tested. 



In building this fumigator an effort was made to shun most 

 of the disadvantages met with in using a tent. 



The box designed and used by Lowe overcomes the disadvan- 

 tages of a tent but has considerable waste space and is an uu- 

 wieldly piece of apparatus to store or move any great distance. 

 The folding fumigator was constructed with the idea of having a 

 gas-tight box of constant capacity, with as little waste space as 

 possible compared with its size, which could be taken down and 

 folded, if desirable, stored in small space, or conveniently trans- 

 ported from one place to another. Like Lowe's square box, 

 this hexagonal fumigator can be placed around a tree instead 

 of having to be lifted over it by means of a derrick, a disadvan- 

 tage of the Emory fumigator. 



Frame. — Two sizes of this fumigator were built, one eleven 

 and one-half and the other twelve feet high. In form they were 

 hexagonal, the shortest diameter being eight and one-half and 

 ten feet respectively, for small and large size. Each side of 

 the frame was made separately and formed a rectangular figure 

 G x 12 ft. in the larger and 5 x 11^ ft. in the smaller. The stiles, 

 vertical strips, of each side were made by ripping nine-inch un- 

 dressed spruce boards into four pieces. By making the two 

 outer cuts on each board at diagonal the rails were beveled on 

 one edge at an angle of 60°. (See Fig. 4, Plate XXIV). The 

 latter was necessary in order to have each side stand at the 

 proper angle. Hence the stiles were 2^ inches wide on the out- 

 side. If inches on the inside, and 1:^ inches thick. The top and 

 bottom rails and horizontal brace were of the same material, 

 1:^ X 2| inches. The diagonal braces were made of 1 x 2 inch 

 stuff. Instead of being mortised the stiles and rails were 

 mitered and firmly nailed. To give additional stfengch a tri- 

 iingular block wrs nniled into each corner. The horizontal 

 brace was placed above the center and a diagonal brace below 



