Proceed I Nf;s, l!)i:3. 9 



Miiuy of the methods adopted by plants to prevent undesirable insects are well 

 known, but there are many of our native plants which deserve to be more fully 

 studied, in order to ascertain the full relationship between the entomologist and the 

 botanist. 



Opportunities for Entomologist .\nd Botanist. 



We want to know what insects are responsible for the pollination of our native 

 plants, and what are the food-plants of their larva-. I feel that in this particular 

 subject much good work might be done by the co-operation of entomologist and 

 botanist. Wo may see other parts of the subject from different standpoints, but it 

 is good for us to occasionally meet on the same ground, to compare notes, witli the 

 hope that our observations may be mutually beneticial. 



Mr. T. Wilson : In regard to the relation of the animal to the vegetable kingdom, 

 in one of Darwin's writings we find that he claims that the success of the clover-cro]) 

 depends on the number of cats in the district. He deduces that crops most abundant 

 in seed occurred near villages, and that the crops were lightest some distance away. 

 He found that the cats killed the mice, the mice destroyed the bumble-bees' nests, and 

 as the bees were necessary to fertilize the clover, consequently the crop depeuds on 

 the number of cats. Mr. Davidson also mentioned the relation of insects to plants. 

 I remember some experiments that were carried on in regard to insectivorous plants. 

 They took the Venus fly-trap in order to prove its carnivorous habits. Seedlings 

 were raised, some under bell glasse.s, some open, and some were fed beef and scraps. 

 The result of the experiment proved that the carnivorous diet was merely an 

 acquired habit. 



Mr. Brittain : The disease known as fire-blight is well known to be carried by 

 insects. Bees are perhaps the greatest factor. I have found centres of blight- 

 infestation in very isolated spots well away from other districts already infested 

 to a marked degree. Birds will also carry the disease, for we find the blight occur- 

 ring at points geographically isolated. The green aphis also spreads the disease 

 on trees from fruit-spurs to the twigs. The apple-leaf hopper (Empoasca mali) is 

 another medium of spread. Many wound-parasites, such as flies, etc., also help to 

 spread the disease. 



The Chairman (Mr. Day) : Any further remarks? Before closing, I would 

 like to say that on Vancouver Island we find many caterpillars affected with fungous 

 diseases. The same also with ground-insects. I will now call on Professor Wilson, 

 who has come to us to-day from the C'orvallis Agricultural College in Oregon. I 

 take great pleasure in welcoming him here to-day and introducing him to the 

 members present. 



COMBINATION SPRAYS AND RECENT INSECTICIDE INVESTIGATIONS. 



By II. F. Wilson, Entomologlst, Oregon Agkicultlrvl Experiment St.vtion. 

 CoRVALLis, Oregon. 



Jlr. Chairman, Members of the British Columbia Entomological Society, and 

 Friends, — It is indeed a pleasure for me to be able to meet with you at this time, 

 and I wish to publicly thank Mr. Brittain, your Provincial Entomologist and Plant 

 Pathologist, who so kindly extended to me the invitation to attend this meeting. 

 Mr. Brittain also kindly suggested my subject for me, and he tells me that it is one 

 in which you are intensely interested. 



COMBIN.^TION SpR.WS .IND RECENT INSECTICIDE InvESTIG.VTIONS. 



I deem it advisable to exjilain in general and in detail the factors which have 

 led to the study of this subject. 



(1.) I consider this to bo the most important problem before the farmers and 

 fruit-growers of to-day. 



