. Annual report. Entomological Society of Ontario; Insect pests; Insects. 14 REPORT OF THE ENTOMOLOGICAL There are now about sixteen of the government-owned silos which are equipped with the permanent fumigation installation, and there are also a number of privately owned ones which have adopted the equipment. As will be seen from the illustrations, the Swiss silos are usually built on a rectangular plan and the individual bins are thus square or rectangular. A typical bin is 70 feet deep and 12 x 12 feet square. Much of the work is carried out by automatic controls, and in most of the silos t
. Annual report. Entomological Society of Ontario; Insect pests; Insects. 14 REPORT OF THE ENTOMOLOGICAL There are now about sixteen of the government-owned silos which are equipped with the permanent fumigation installation, and there are also a number of privately owned ones which have adopted the equipment. As will be seen from the illustrations, the Swiss silos are usually built on a rectangular plan and the individual bins are thus square or rectangular. A typical bin is 70 feet deep and 12 x 12 feet square. Much of the work is carried out by automatic controls, and in most of the silos there are only two permanent employees on NOT TO SCALE Figure 9. Sv/iss Federal Grain Administration. Diagram of Fumigation System in silos. (Photo courtesy H. M. Government, ) (A) Blower with centrifugal fan. (B) Steel expansion chamber. (C) Manifold pipe running below bins. (D) Fixed pipe installation with shut-off valve (E). (F), (G), (H) Installation for flexible, detachable pipes. (J), (K) Fixed pipe installation at bin top. (L), (M) Flexible pipe installation at bin top. (P) Recirculation pipe. (Q) Fresh air intake. (R) Exhaust valve to roof. (S) Shut off valve for recirculating system. At the base of each bin is a counter grading device and, periodically, grain is drawn off from the bin through this device in four streams. By this means significant increases in temper- ature in each of the four quadrants of the bin can be detected and the possibility of this being associated with insect infestation gives warning of the need for Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Entomological Society of Ontario; Ontario. Dept. of Agriculture. Toronto, The Society
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
