ENTOMOLOGY. 505 



the mechanical niixirg of kerosene and water, insects injurious to corn, 

 a new ehn beetle, preventives for the horn tly and for mos([uitos, treat- 

 ment for peach rot, and work in making a collection of the insects of 

 the State. 



In experiments regarding the effect of mechanical mixing of kerosene 

 and water it is found that the proportion of li parts of kerosene to 10 of 

 water is needed for thorough work with most caterpillars, while 1 : 10 will 

 kill many of the young. For most plant lice 2 : 10 is needed for thorough 

 work. The results of exi)criments regarding the effects of kerosene on 

 the foliage of various plants showed that most of them will stand a 

 strength of 3:10 without injury. It is observed that in mechanical 

 mixtures more kerosene is needed than where emulsions are made, but 

 the cost is no greater than the soap required to make the emulsion, and 

 the insecticidal value is fully equal to that of the latter. 



Brief notes are given on a new corn insect, which has already been 

 described in Bulletin 30 of the station (E. S. R., 7, p. 878). 



A report is given of a serious elm pest which proves to be Monocesia 

 coryli, and spraying the trees with Paris green is recommended for its 

 destruction. This beetle, the author suggests, should be known as the 

 "greater elm leaf beetle,'' to distinguish it from the smaller "imported 

 elm leaf beetle." 



Kerosene is recommended as a remedy for tlie prevention of attacks 

 of the horn fly on cattle, and to prevent the breeding of mosquitoes in 

 water tanks. 



The station insect collection received numerous additions during the 

 year. 



Experiments were conducted with Bordeaux mixture for the preven- 

 tion of peach rot during 1891 and 1895. The experiments in 1894 were 

 terminated by heavy frost killing all the fruit buds early in the season; 

 and those in 1895, although beneficial in some cases, are not con- 

 sidered conclusive, and must be continued before their real value can 

 be determined. 



Some destructive insects, E. M. Webster {Ohio ^Sta. Bui. 68, pp. 

 19-58, j^Zi'. 4). — Notes are given on some particularly destructive insects 

 of Ohio, spraying with arsenites vs. bees, and the carnivorous habits of 

 slugs. 



The following insects are popularly described, figured, and remedies 

 suggested: The cankerworm {Ankopteryx vernnta), the fruit bark 

 beetle {Scoiytus riif/Hlo.si(s), the ring-legged tree bug {Ihochymena annu- 

 lata), the clover leaf weevil (Phyfoiiontn.s punct((fus), the clover root 

 borer [Hylastes trifolU), the strawberry sawtiy {Harplphoriis maculatus), 

 the harlequin cabbage bug {Murganila histrionica), the squash plant 

 louse {8i2)honophora vucurbittv), the western corn root worm {Biahrotiva 

 longicornis), white ants {T er mes jiavipes), th.e hostile leaf hopper [Delto- 

 ceplialus inimicuii), webworms {Cranihus zeellus, C. lafiueafellus, C. hitcr- 

 minellus, C. viutabilis, C. liiteoldlua), and the i)owder post worm {Lyctiis 

 striatus). 



