
Plate XXIV.—Details of fumigator construction: 1, Form of fumigator and moy- 
able braces; C, cyanide holder; 2, method of hinging and arrangement of 
braces of top; t, triangular rest for lid and peak for cover; 8, underside of 
top, showing groove to fit frame; 4, method of ripping planks for stiles. 
