52 EXPERIMENT STATION KECOKD. 



auioiint (if carliuii (lisnli)lii(l was more econoiiiie and satisfactory in destroy in.i,' 

 i^round S(iuirrels were somewhat unsatisfactory, for the reason that apparently 

 the mininunn poisonous dose was not determined. A halt" tahlespoonful is not 

 always sutticient, and in f-ome cases 2 tablespoonsfnl were used. Where a suth- 

 cient amount of carbon disulphid is used it apparently re(iuires not more than 

 2 or :> hours to destroy the s(iuirrels. 



Birds useful in the war against the cotton boll weevil, II. W. IIensiiaw 

 (U. tS. Dcpt. Atir., Bur. Jiiul. Siirrci/ C'irc. '>7, iip. '/). — It has been found that 

 ;>8 species of birds eat the cotton boll weevil to a greater or less extent. In this 

 connection special mention is made of orioles, the nighthawk, and various kinds 

 of swallows and martins. 



Value of swallows as insect destroyers, II. AV. riENSHAW_([ . »S'. Dcpt. Atji.. 

 Bur. Biol. Purvey Circ. 56, pp. -■}). — Attention is called to the agency of swallows 

 in the destruction of boll weevils and other injurious insects. Notes are given 

 on the tree swallow, barn swallow, bank swallo\\', cliff swallow, and purple 

 martin. The author suggests a simple means of protecting these birds and 

 encouraging their nesting. 



Index-catalogue of medical and veterinary zoology, C. W. Stiles and 

 A. Hassall {U. S. Dept. Agr.. Bur. Aiiiiu. Indus. liuJ. .19, pf. 17. pp. LiliU- 

 J.iO.'i). — A list of titles arranged alphabetically under authors' names from Maar- 

 tens to jNIartirano. 



Executive report of the Illinois State entomologist, S. A. Forbes {E.rcc. 

 h'pl- 111- Ktatc Ent., l!)n.j-6, pp. ,^7).— I»uring the years V.)i)r> and I'.XHi great 

 advance has been made in devising practical remedies for the control of insects. 

 Nevertheless, enormous losses were caused by insects in- Illinois, particularly by 

 corn insects and San Jose scale. The M^ork of the entomologist in the study of 

 remedies for the corn aphis has been quite successful. I'rogress is also reported 

 in devising means for combating white grubs, San Jose scale, and cottony maple 

 scale. 



In 190G, 239 nurseries were inspected at an average cost of .$4.77, which, 

 according to the State law, is charged against the nurseryman. A list is given 

 of the nurseries inspected in Illinois. 



[Report of the] department of entomology, 10. I). Sanderson (Nrir Haiiip- 

 sJiirc'Hto. Bui. 120, pp. 2')S-26()). — lieference is made to the entomological eipiip- 

 ment and collection of the station and to insects received for identification. .V 

 list is given of the publications of the entomologist during the years l()0;j and 

 ItXKJ. 



A brief accoinit is also given of the work of the station on the brown-tail moth, 

 gipsy moth, codling moth, apple maggot, and insect pests of gardens and shade 

 trees. 



I Report of! the professor of entomology and zoology, C. .T. S. Bethune 

 iAnn. Rpt. Oniurio Agr. Vol. and E.rpt. Farm, 32 (1906), pp. '/ ?-.7'/ ) .—Brief 

 mention is made of the instruction work in entomology at the agricultural college 

 during 1906, and of correspondence, demonstrations, and publications on ento- 

 mological sub.iects. 



In field experiments in treating oyster-shell bark-louse, lime-sulpluir wash 

 gave the best results followed in efiicienc.v by kerosene enmlsion. In combat- 

 ing root maggots, the best results were obtained from an api)lication of pyreth- 

 runi mixed with 4 times its weight of flour. Carbolic-acid emulsion also gave 

 good results. Crude petroleum, pure and in emulsions, was tested as a spray 

 on apple, iiear. plum. ;ind cherrv trees, and black currants. It was found that in 

 winter it is harmless t(i tcndfM- varieties of trees and is fully as efl'ective as 

 kerosene. In summer considerable danger attends its use. 



