ENTOMOLOGY. 877 



The exix'riinents for the i)reventiou of apple seab weiv canied (in in 1' orchards, 

 the funfjieide uned being Bordeaux mixture, but the ahnost entire absence of scab 

 from the unspraye<l trees led to rather negative results. It is thought that the prun- 

 ing and cleaning up of the orchards and their thorough cultivation aided very 

 materially in suppressing the apple scab. The use of linie-sulphur spray for apple 

 scab wa.s tested, ami it was found that a single application of this fungicide would 

 not prevent the occurrence of the disease, although such a claim has been made 

 for it. 



A brief account is given of the pruning of pear trees for the destruction of the tire 

 blight. The trees in question were severely pruned during the early summer, and 

 although the variety Winter Nellis is particularly subject to the disease, the trees 

 examined in October did not show a trace of the blight either on the fruit, young 

 braui-hes, shoots, or leaves. 



Crown gall, W. Paddock {Colorado Sta. Bid. SG,p2J. 7, ph. 3). — A popular account 

 is given of the crown gall of fruit trees and other plants, and a warning against its 

 spread from infested nurseries. In Colorado the disease does not seem to be partic- 

 ularly destructive where irrigation is not practiced, but its abundance in other dis- 

 tricts is shown by the fact that few shipments of nursery stock have been received 

 from points outside of the State which were entirely free from the disease. The pre- 

 ventive measures of inspection, rejection of affected stock, pruning of diseased 

 portions of old trees, and covering them with the fungicide are described. 



ENTOMOLOGY. 



Thirty-fourth annual report of the Entomological Society of Ontario, 



1903 {Rpt. Ontario Ent. Soc. 190 J, pp. 116, ph. 5, figs. 60). — This rei:)ort contains 

 the proceedings of the fortieth annual meeting of the society, held at Ottawa Sep- 

 tember 3 and 4, 1903. During the different sessions of the society various papers on 

 economic entomology were presented, some of which are briefly mentioned in the 

 following notes: 



Keports were made to the society by the Entomological Council and by its various 

 branches and sections, and brief accounts were given on the insects of the year by 

 C. II. Young, C. E. Grant, and J. A. Balkwill. The president, W. Lochhead, in his 

 annual address (pp. 22-26) discussed the progress of economic entomology in Ontario. 

 The subject was presented in a historical manner and notes were given on the eco- 

 nomic entomological investigations of greatest importance. 



A paper on the transmission of yellow fever by mosquitoes was read by L. O. 

 Howard (pp. 26-30). W. Eochhead (pp. 31-36) gave an account of the injurious 

 insects of the season, including Hessian fly, wheat midge, pea weevil, codling moth, 

 beet leaf miner, plum curculio, tussock moth, gooseberry fruit worm, asparagus beetles, 

 etc. Some notes on various injurious insects were given by C. Stephenson and A. H. 

 Kilman. The habits and life history of the cottony maple scale were described by 

 C. J. S. Bethune (pp. 40-42), and the same author discussed the economic relations 

 of the great leopard moth (i)p. 46, 47). A key to the insects affecting small fruits 

 (jip. 74-79) was given by the same author, who also discussed the present condition 

 of the San Jose scale in Ontario (pp. 42-45). In the last-named paper notes are 

 given on the use of crude petroleum, whale-oil soap solution, carbolic wash, and 

 lime-sulphur-salt wash. 



The insects injurious to linden were discussed by A. Gibson (pp. 50-61). The 

 pe.sts of this tree were classified according to the particular part of the tree affected 

 and according to their systematic position. 



J. Fletcher presented a general account of insects injurious to Ontario crops in 1903 

 (pp. 62-71). In this paper notes were given on wheat-stem maggot, fall wel)Worm, 

 Hessian fly, ciover-seed midge, white grub, onion maggots, carrot rust fly, asparagu'j 

 beetles, cucumber beetles, San Jose scale, etc. 

 26722— No. 9—04 4 



