CONTENTS 



Shafer, G. D. The effect of certain gases and insecticides upon Page 



the activity and respiration of insects (abstract) 47 

 Some properties that make lime-sulfur wash effective in killing 



scale insects (abstract) 50 



Smith, R. I. Formalin for poisoning house flies proves very attrac- 

 tive when used with sweet milk 417 



SwENK, M. H. A new sawfly enemy of the bull pine in Nebraska* 172 



Notes on some insects injurious in Nebraska in 1910 283 



Stmons, T. B. Report of committee on treatment of scale infested 



nurseries 262 



Practical method of inspecting imported seedlings 263 



Stmons, T. B. and Cory, E. N. The terrapin scale in Maryland * 203 



Results of experiments on dipping trees and fumigating peach 



buds * 269 



Stmons, T. B., Smith, J. B., and Worsham, E. L. Attitude of the 



nurserymen toward a national inspection and quarantine law 278 



TowNSEND, C. H. T. The cotton square weevil of Peru and its bear- 

 ing on the boll weevil problem in North America 241 

 A simple and convenient system of keeping general entomologi- 

 cal records 249 



Urich, F. W. Notes on some insects affecting the sugar-cane 224 



Washburn, F. L. A method of securing the fertilization of clover 

 by means of bumble bees in experiments with Bruchophagus 

 funebris 140 



Webster, R. L. Notes on the wheat-head army worm, Meliana 



albilinea Hlibn., as a timothy pest 179 



Spraying with linseed oil wash for the oyster-shell scale 202 



Insects of the year 1911 in Iowa 524 



Wu^son, H. F. Some old methods applied in a new manner to a col- 

 lecting machine 286 

 Notes on the red spider attacking cotton in South Carolina 337 



WmoLE, Francis. Bulb mite 127 



Wood, H. P. Notes on the life history of the tick parasite, Hunter- 



ellus hookeri 425 



WooDWORTH, C. W. Leakage of fumigation tents 376 



Worsham, E. L. Spraying apparatus for scale insects 193 



WoRTHLBT, L. H. Spraying of woodland and shade trees 188 



* Withdrawn for publication elsewhere. 



