ENTOMOLOGICAL SOCIETY OF ONTARIO. 95 



This method makes it certain that we shall not " shut the wolf up in the sheepfold." 

 Articles fumigated are entirely rid of eggs, larvio, and living insects. They may be shaken 

 out in the open air for greater security and then replaced on the shelves, with the assur- 

 ance that they will not be found gnawed when next visited. 



Preservation of the Stuffing of Furniture \nd Saddles. 



Tinea and Attagenus have a marked predilection for bor.^ehair, so that these insects 

 are sometimes found flourishing in the stuffing of our furniture, even that which is in daily 

 use. This process has the advantage of permitting us to destroy them without having 

 recourse to the upholsterer ; we need but to construct a fumigating chest large enough to 

 contain a couple of armchairs or more. In the same way we may treat mattresses, eider- 

 down quilts, or anything which is supposed to contain ei^gs or larvje. 



I have experimented with a saddle much damaged hy months, and after fumigating 

 it five days noticed no app'^arance of insects ; the saddle was c impletely p'^netrated by 

 the vapor and all the moths perished. I kept it two years under observation in order to 

 be assured of the efficacy of the process. 



Disinfection in Epidemics, 



I am persuaded that clothing subjected to this process would be disinfected quite as 

 wtiU as by the processes usually employed in certain epidemics, such as typhus, cholera, 

 smallpox, etc. It seems to me that the vapors which penetrate fabrics so well and kill 

 insects so thoroughly would act in the same way upon the microbes v/hich engender 

 epidemics * 



In discussing this paper Mr. Atkinson stated that he had used a very similar box in 

 fumigating objects infested with insects. 



Mr. Garm.iu called attention to the fact that at the museum of comparative zoology 

 at Cambridge, a large upright zinc lined cas^ was constantly used for disinfecting the skins 

 of birds and mammals. 



Mr. Riley had used bisulphide of carbon successfully for his insect collections. 



Mr. Smith had used it successfully for ants, and found it not injurioas to vegetation. 



Mr. Garman reported having found it efiective in destroying the Melon Lous^. His 

 method of applying it was to roll the vines up in a heap, then invert a tub over them, 

 and after placing a saucer containing a tablespoonful of the Vjisulphide under the tub, its 

 edges were pressed down into the soil or the earth was drawn up when necessary. He 

 had tried the fumes of burning sulphur and tobacco, but the former injured the plants and 

 the latter did not kill the plant lice, many of them gradually recovering after being 

 stupefied by it. 



Mr. Smith thought since the aphides often spread from particular plants or hills, the 

 use of bisulphide in good season might make it possible to prevent the injuries of these 

 insects. 



Mr. Atkinson read a paper by Dr. J. Ritsema, Bos., on '•' Aphelenchus olasistus, nov. 

 sp., a nematoid Worm, causing Leaf-sickness on 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 oUslstus in Europe, where it causes almost precisely the 

 same trouble with Begonia and Asplenium, is inclined to think thit the species pre- 

 viously mentioned by Mr. Atkinson is identical. In the discuss on 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. 



*NorE.— I liave observed in biiulp'iide of cirbja n<> clearly defia-ji power of takiag out the colors of 

 fabrics which I have subjected to its vipor. It may, therefore, be used without fear, excrjpt, perhaps, iu 

 the case of the oaost delicate tints. 



