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not only in New Hampshire and Maine, but also in Nova Scotia and New Bruns- 

 wick. It appears, therefore, that its invasion of Quebec is near at hand, and it 

 is the duty of every citizen of the Province to report the first appearance of the 

 insect so that prompt measures may be taken by the authorities for its suppression. 

 The following is a concise summary of the various stages of the insect : 



Adult. — A white moth with the tip of the abdomen tinged with brown, and 

 with a tuft of brown hairs, most conspicuous in the female. It expands l| inches. 

 Both sexes are strong fliers, active at night, and attracted to lights. They make 

 their appearance in July. 



Eggs — Laid in brownish clusters of 150 to 300 on the leaves at the tips of the 

 branches in July and August. Usually brown hairs are mixed with the egg-mass. 

 The eggs are hatched by August 15th. 



Potatoes Showing Disease of Potato Canker. Cut in Halves. 



A. — A tuber showing four eyes attacked by the fungus Chrysophlyctis endobioiica, Schilb. 



B. — A tuber showing upper eye only attacked. 



C. — A tuber half covered by the excrescences caused by the fungus, (after GUssow). 



Caterpillars. — When young the caterpillars are blackish, with reddish- 

 brown hairs, and there is a row of conspicuous white spots on each side of the back. 



WART DISEASE OF POTATO (Chrysophlyctis endobiotica) .-Since 1896 the 

 Wart Disease of Potato or Potato Canker has been doing much damage in Europe 

 where it is now considered one of the worst enemies of the potato. In 1909 Mr. 



