. Annual report. Entomological Society of Ontario; Insect pests; Insects. 10 REPORT OF THE ENTOMOLOGICAL and plant products, the examination of exported plant material, and, in addition, the actual carrying out of domestic plant disease and insect control programs. This work is largely of an extension nature, in that advice is given to farmers, and propaganda work of one kind or another is carried on. Vacuum fumigation plants at ports of importation in France, therefore, fall under the control of this division. At present the one at Le Havre is the only one actively functioning, but others are
. Annual report. Entomological Society of Ontario; Insect pests; Insects. 10 REPORT OF THE ENTOMOLOGICAL and plant products, the examination of exported plant material, and, in addition, the actual carrying out of domestic plant disease and insect control programs. This work is largely of an extension nature, in that advice is given to farmers, and propaganda work of one kind or another is carried on. Vacuum fumigation plants at ports of importation in France, therefore, fall under the control of this division. At present the one at Le Havre is the only one actively functioning, but others are in the course of construction, or proposed, at Nantes, Dunkirk, Bordeaux, Marseilles and on the Franco-German frontier at Figure 5. Fumigation Station, Le Havre. Chamber for treating railroad cars under released vacuum. (ii) Fumigation Station at Le Havre The port of Le Havre was almost completely destroyed during the last war and an opportunity has been afforded for the erection of very modern facilities throughout. Not least among these is a new fumigation station. This has been supplied with adequate tracking and road facilities. The installation is built around the vacuum released technique with simultaneous intro- duction of gas and air. There are four steel vacuum fumigation autoclaves of 706, 1095, 1765, and 2647 cubic feet internal capacity. Evacuation of the air is effected by a battery of rotary pumps. The rotary pump is popular with French engineers for vacuum fumigation, as opposed to the reciprocating type usually found in American and Canadian installations. An interesting feature of the vacuum chambers is the special provision of waterfilled door gaskets. After the door is closed, the automatic equipment is turned on and water forced, under pressure, into. 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 rese
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
