. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 18 FUMIGATION FOR THE CITRUS WHITE FLY. would therefore measure before shrinkage ^2j feet (49 feet 101 inches + 3 feet 4 inches) lengthwise of the strips through the middle section, and 49 feet 10^ inches crosswise of the strips. After shrinking, the dimensions would be approximately 49 feet 4^ inches in each direc- tion. The two sides of the octagon which are formed by the ends of the full-length strips are known as the "ends" of the tent and the sides of the octagon which are parallel with these strip
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 18 FUMIGATION FOR THE CITRUS WHITE FLY. would therefore measure before shrinkage ^2j feet (49 feet 101 inches + 3 feet 4 inches) lengthwise of the strips through the middle section, and 49 feet 10^ inches crosswise of the strips. After shrinking, the dimensions would be approximately 49 feet 4^ inches in each direc- tion. The two sides of the octagon which are formed by the ends of the full-length strips are known as the "ends" of the tent and the sides of the octagon which are parallel with these strips as the "sides" of the tent. By gathering the cloth around a tightly-rolled wad of burlap and tying on an iron ring, a convenient arrangement is made for attach- ing the hooks or poles when covering trees. (See fig. 2.) In the case of the smaller sizes of sheet tents, which are to be handled with simple poles, these rings are unnecessary, at- tachments being made in the manner here- after described. For large tents, measuring more than 42 or 45 feet, it is probably best to use the rings in all cases. It is most con- venient to have one of these rings located a few feet in from each of the four corners of the middle section of full-length strips (fig. 1, B). In general, the distance in from the mar- gin should be from one-twelfth to one-tenth of the distance betM^een parallel sides of the tent, and the distance between the two rings on each side should be from one-third to two- fifths of the distance between parallel sides. To the ring mentioned a chain link is some- times attached (e), called a " jingler," the ob- ject being to indicate the position of the ring when the operator shakes the tent, enabling him readily to locate it at night. In order to provide for the increased stress on the cloth at the points wdiere these rings are to be located, a reenforcement should be stitched on near each of the "ends" of the tent. The main stress in handling
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