1920 ENTOMOLOGICAL SOCIETY. 43 



States which is needed for the development of reproduction enterprises to supply 

 home needs. All such special introductions, however, must be made through the 

 Department of Agriculture and will be subject to all the safeguards which the 

 highly developed inspection service of the Department in Washington can give, 

 including, if necessary, detention in quarantine or even the destruction of the im- 

 ported material if its condition of infestation is such that such destruction is 

 determined as necessary to prevent entry of pests or plant diseases. It is not prob- 

 able, however, that material offered for entry under this provision of the quarantine 

 will be often so infested as to require such drastic action. As a result of the mis- 

 representation referred to and other phases of misrepresentation Congress and the 

 Department of Agriculture at Washington have been flooded with letters and 

 petitions in opposition to the quarantine. This opposition has largely come from 

 certain importing interests which will be necessarily restricted in business by the 

 quarantine. 



The experts of the Department of Agriculture, and, I think, also the thought- 

 ful horticultural interests of the country, are convinced of the need of such quaran- 

 tine action. Undoubtedly this quarantine will lead to a development in this 

 country of horticultural productions to take the place of the articles which have 

 hitherto been obtained from foreign sources. In this way it will indirectly be the 

 means of developing American horticulture and floriculture. It is only fair to 

 say to those who go into production enterprises to supply the material the importa- 

 tion of which has been cut off that this quarantine in all probability in its main 

 lines will stand and that such enterprises will therefore fill a permanent place in 

 our horticulture. This does not mean that Quarantine No. 37 is not subject to 

 modification or change, but it does mean that the department and the experts of 

 the country are convinced that it is sound in principle and that its enforcement 

 practically along its present lines will afford a needed protection for the forest, 

 fruit and farm interests of this country. Wherever an error can be shown it will 

 be corrected but changes will not be made for personal, selfish, or commercial 

 interests, however powerful their backing, to the loss of the principle of protection 

 which underlies and is the basis for this quarantine. 



HOPKINS' BIOCLIMATIC LAW. 

 Wm. Lochhead, Macdonald College, Que. 



Economic Entomology is ever drawing on other sciences for aid in the solution 

 of its problems. It is indebted to cheraistiy for help in solving the problem of 

 insecticides, to bacteriology and botany in the Effort to work out means of con- 

 trolling certain insects by bacteria and fungi, to agriculture for the introduction 

 of farm practices that tend to control certain insects, to zoology for a knowledge 

 of the habits of birds and other animals that feed upon insects; to physics for 

 suggestions and explanations regarding the construction of many useful devices, 

 and to Meteorology for the help it has given toward a better understanding of 

 the distribution of organic life and of the factors that influence its seasonal activi- 

 ties. Without a knowledge of these sciences an economic entomologist may make 

 but little headway when brought face to face with a new practical problem. 



One of the most recent and most far-reaching contributions to Economic 

 Entomology is the Bioclimatic Law of Dr. Hopkins of the U. S. Bureau of 

 Entomology. 



