. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. Lady beetles ("lady ; "lady bugs,") or cocclnellids; a, larva; b, pupa; c. imago; all much enlarged. ( Bu. Ent.) sence of the small fish called "millions" in Barbados is the reason why that island is so free from malaria. Rabbits are not only a direct cause of great losses to the Australian fanners but also indirectly in de- veloping the hlow-fly pest which is very destructive. 3.âInsects aJid Plajits. We are familiar with the enormous losses produced every year by
. Canadian journal of agricultural science. Agricultural Institute of Canada; Agriculture. Lady beetles ("lady ; "lady bugs,") or cocclnellids; a, larva; b, pupa; c. imago; all much enlarged. ( Bu. Ent.) sence of the small fish called "millions" in Barbados is the reason why that island is so free from malaria. Rabbits are not only a direct cause of great losses to the Australian fanners but also indirectly in de- veloping the hlow-fly pest which is very destructive. 3.âInsects aJid Plajits. We are familiar with the enormous losses produced every year by the action of insects and fungous di- seases on our cultivated crops. But we should not fail to look at the other side of the shield, and ascer- tain how many plants are dependent upon insects for their fertilisation and the production of seed. Elsewhere (in the Third and Fourth Reports of the Quebec Society for the Protection of Plants) I have dis- cussed the relations between insects and plants, and their value as i)ollinators of useful ]ilants. In this con- nection I may quote Dr. Phillips' remai-ks regarding the value of the honey-bee: "The jiroductiou of mil- lions of dollars worth of fruit depen(is largely on insect pollination, and no insect is so iiiiportant in this work as the honey-bee. It is a most oonservative estimate to claim that the honey-bee does more good to American agriculture in its office as a cross-polliiiator than it does as a honey ; In the rehilinn of Insects to I'lanI diseases, two aspects present '.es, v'r/.. (1) tjic role of insects as disease-carriers to plants, and (2) the role of fun- gous diseases in destroying insects. It is clear that if these relations are to be thoroughly investigated, the economic entomologist must work in close co-operation with the plant-pathologist. With regard to the part played by insects as di- sease-carriers to plants. I cannot do better than refer you to the excellent paper by Prof. Ca
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