230 JOURNAL OF ECONOMIC. ENTOMOLOGY [Vol. 15 



Elgin infestation, whereas great difficulty was encountered in locating 

 borers in the center townships, that is, between the two infestations. 



The infestation is exceedingly light on the extreme western edge of 

 the infested area, that is, in Kent and Essex counties, in fact the only 

 collections in the townships found infested in these counties this year, 

 were taken along the main highway which runs east and west. The 

 spread into this area may be due to artificial spread, either from car- 

 riers such as autom^obiles, or from infested com refuse washed up 

 on the shore of the lake, as the highway is adjacent to the lake in this 

 district. 



The discovery of the borer on the Lake Huron shore was made late 

 in the season, and only a single collection of larvae was taken in the 

 township of Goderich. As the neighboring township was found to 

 be lightly infested, it appears as if the infestation in Goderich township 

 may be due to an exceptionally long flight of the adult moths. 



The only isolated infestation was found in Pickering township, about 

 twenty miles east of Toronto and bordering Lake Ontario. The collec- 

 tion of larvae was made in the town of Pickering. Although the entire 

 township, as well as the neighboring townships were carefully rescouted 

 no further collections were taken. The nearest infestation to this point 

 is in Linclon county approximately forty -five miles away. 



Upon the completion of the scouting season in 1920, a domestic 

 quarantine was placed on the infested area prohibiting the movement 

 of com stalks, broom corn, green sweet corn, roasting ears, corn on cob 

 and com cobs from the area placed under embargo. Exception was made 

 however, to shipments of seed corn on the cob consigned to recognized 

 fairs and exhibitions, which were inspected immediately upon arrival 

 at destination. This quarantine was amended in May 1921, and three 

 additional amendments were passed during the summer and early fall, 

 quarantining the additional townships found infested. 



In order to bring the attention of the general public to this em.bargo, 

 warning notices were placed at the intersection of every road leading 

 out of the quarantined area. In addition, large canvas banners, 1}4. feet 

 by 1 1 feet were stretched across the main automobile highways leading 

 out of the district. Automobiles were stopped and searched on the main 

 highways on Sundays and holidays for evasions of the quarantine. A 

 careful watch was also kept on all m_arkets and fall fairs. It was found 

 that live stock men were in the habit of taking corn stalks as fodder for 

 their live stock exhibitions at the larger shows, thus m.aking it necessary 

 to station inspectors at such fairs. 



