358 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 4 



at the time the University took up the work. This shows the aston- 

 ishing fact that the people were spending enough money on one block 

 to practically exterminate the ants in nine when done in a systematic 

 manner. And yet the ants were constantly spreading notwithstanding 

 their efforts. 



As I have said, the results so far are verj- satisfactory. We have 

 estabhshed that it is possible to exterminate the Argentine ant and 

 to absolutely prevent its spread. 



LEGISLATION IN CANADA IN REFERENCE TO INJURIOUS 

 INSECTS AND PLANT DISEASES 



By C. Gordon Hewitt, D. Sc, Dominion Entomologist, Ottawa 



The Department of Agriculture of Canada is empowered by the 

 Destructive Insect and Pest Act of 1910 to take such action as may be 

 deemed necessary to prevent the introduction or spreading of injurious 

 insects, pests and plant diseases. All plants, with the exception of 

 certain classes such as greenhouse-grown plants, herbaceous peren- 

 nials, bulbs, etc., may be imported at certain seasons of the year only 

 and through certain ports as specified in the Regulations. The Depart- 

 ment of Agriculture has power to inspect plants liable to be infested 

 with certain insects and plant diseases, to destroy the same if neces- 

 sary or to prohibit their importation into Canada. 



At six of the ports of entry (See Section 3 of the Regulations) fumi- 

 gation stations are established where plants from countries and states 

 infested or liable to be infested wdth the San Jose scale are fumigated 

 with hydrocyanic acid gas by special officers in charge. 



Plants from Europe, Japan and the states of Vermont, ISIaine, Mas- 

 sachusetts, New Hampshire, Connecticut and Rhode Island, six of 

 the United States of America, are inspected by officers of the Depart- 

 ment for the brown-tail moth and gypsy moth. In some cases this 

 inspection is made at the port of entry, in other cases at the destina- 

 tion of the stock. In the latter case the plants may not be unpacked 

 except in the presence of an inspector. 



It is necessary for all persons and transportation companies import- 

 ing or bringing plants into Canada to notify the Dominion Ento- 

 mologist, Ottawa, of the fact, and through the cooperation of the 

 Department of Customs, the custom officers at the ports of entry 

 also send advices of the arrival of shipments of plants at the various 

 ports through which plants may enter. 



In addition to the inspection and fumigation of imported plants, a 

 number of field officers are employed in inspecting orchards and in 



