FLOUR MOTH. 49 



On the outburst of the attack in 1889, in Canada, the matter was 

 taken up by the Department of Agriculture of Ontario, and the 

 measures adopted by the Steam Milling Co., on whose premises the 

 attack had first been observed, being deemed insufficient, the steam 

 treatment was improved on, under Government orders, by construction 

 of a strong room or box, so arranged that steam under pressure could 

 be drawn or driven into it. This box was six feet wide, six feet high, 

 and twelve feet long, and a steam-pipe was attached to it from the 

 boiler ; and in this box every machine, and even the mill-stones and 

 iron rollers, were submitted to purification from the infestation, by 

 steam. 



The result was, as stated in the Appendix (published at Toronto, 

 on Oct. 15th, 1890) to the preceding ' Bulletin ' on the Flour Moth,* 

 " The measures which were taken by the Provincial Board and the 

 Milling Co., on whose premises the moth appeared last year, have, I 

 am glad to say, resulted in a complete eradication of the pest from 

 such premises." — P. H. B. 



This Appendix, which is addressed to " millers and produce-men," 

 in view of important interests involved, and the loss likely to accrue 

 to the export trade of the province (if the pest became prevalent), drew 

 attention forcibly to the penalties there attached by law to any 

 violation of the statute regarding selling unsound grain or flour. 

 Further, they gave notice of the course they purposed to adopt in case 

 the owners of infested premises had " so little regard for the public 

 interests as to send sacks infested with the ova or larvse of the pest to 

 other places." 



In regard to legal points : that in no way enters into our present 

 consideration here, save to show the great importance attached to 

 stamping the pest out immediately ; but the measures to be taken for 

 this purpose, which are given in the same ' Bulletin,' are well con- 

 sidered on good authority, and those which I reproduce below are 

 applicable here as in Canada : — 



" 1. Destroy the moths. This can be done by closing the windows, 

 doors, or other apertures of the building, and, night after night, 

 until all evidences of the moths have disappeared, burn sulphur by 

 placing it in shallow pans upon a number of heated stoves, say small 

 coal-oil stoves, in different parts of the building, and putting a match 

 to it. 



" 2. Search for evidence of larva or caterpillar in all packages, 

 bags, &c., of flour or meal, and, wherever found, at once superheat the 

 flour in a dry kiln. Spread it out in a thin layer, so that the heat can 

 reach it and the packages, boxes, &c., containing it. 



* Appendix to 'Bulletin ' 1 on the Flour Moth, issued by the Ontario Dept. of 

 Agriculture, prepared by P. H. Bryce, Sec. 



