THE CANADIAN ENTOMOLOGIST. 269 



and too much is expected from him. The science of applied agriculture 

 should relieve him of some of his duties. This paper was discussed in 

 some of its details by Messrs. Riley, Forbes and Howard. 



The fourth session was held on the morning of August 1 6. The Com- 

 mittee on the President's Address reported in favor of the adoption of 

 his recommendations and the appointment of a standing committee to 

 present a detailed plan for co-operative work among members, and to 

 make recommendations concerning legislation. The report was adopted, 

 and Messrs. Osborn, Smith and Garman were appointed as a committee. 



Mr. Forbes read a paper by H. Du Buysson upon " Fumigation with 

 Carbon Bisulphide for the complete and rapid destruction of Insects 

 which attack Herbaria, Furrieries and Woollen Stuffs." In this article a 

 very ingenious and interesting water joint for the box used for fumigating 

 purposes was described, and the best method of employing the box for 

 the different classes of objects mentioned in the title was given. Mr. 

 Atkinson stated in discussion that he had used a very similar box in 

 fumigating objects infested by insects. Mr. Garman stated that at Cam- 

 bridge a zinc-lined case was constantly used for disinfecting bird and 

 mammal skins. Mr. Riley had used the bisulphide in the insect collec- 

 tions of the National Museum. Mr. Smith had used it against ants and 

 Mr. Garman against the melon louse. The latter gentleman rolls the 

 melon vines up into a heap, inverts a tub over them, and places a little 

 bisulphide in a saucer under the edge of the tub. 



Mr. Atkinson read a paper by Dr. J. Ritsema Bos, on "'Aphelenchus 

 olesistus, nov. sp., a nematoid worm, causing Leaf- sickness in Begonia 

 and Asplenium." He referred to a note by Mr. Atkinson, read at the 

 preceding meeting of the Association, in which an Anguillulid is described 

 as affecting leaves of Chrysanthemum and Coleus, making no swelling or 

 deformity, but causing brown patches on the leaves. The author having 

 studied and described Aphelenchus olesistus in Europe, where it causes 

 almost precisely the same trouble with Begonia and Asplenium, he is in- 

 clined to think that the species previously mentioned by Mr. Atkinson is 

 identical. In the discussion, Mr. Atkinson stated that while there were 

 characters in the form studied by him which seemed to place it in the 

 genus Tylenchus, he thought that careful comparison of types might show 

 the two to be identical. 



Mr. Osborn presented a paper on " Methods of Attacking Parasites 

 of Domestic Animals." The preventive measures consisted in the ex- 



