CONTENTS Vll 
Sasscer, E. R., and Weigel, C. A. Further Data on Fumigation with Hy¬ 
drocyanic Acid Gas in Greenhouses on a Commercial Basis 84 
Severin, H. H. P. Investigations of Beet Leafhopper, Eutettix tenella Baker, 
in Salinas Valley of California 479 
Shotwell, R. L. On the Oyster Shell Scales found on Willows at Boulder, 
Colorado 392 
Simmons, Perez. A House Fly Plague in the American Expeditionary Force 357 
Smith, H. S. What We May Expect from Biological Control . 506 
The Successful Introduction and Establishment of the Ladybird, Scymnas 
binaevatub Mulsant, in California 516 
Smith, R. H. Spreaders in Relation to Theory and Practise in Spraying 201 
Smith, R. I. Vacuum Fumigation Experiments with Brown Tail Moth and 
European Corn Borer Larvae under Winter Conditions 317 
Snapp, O. I. Recent Developments in Plum Curculio Investigations in 
Georgia 275 
Snyder, T. E., Middleton, Wm., and Keen, F. P. The Progress of Forest 
Entomology in the United States 413 
Stahl, C. F., and Carsner, Eubanks. A Discussion of Eutettix tenella 
Baker, as a Carrier of Curly-Top of Sugar Beets 476 
Stear, J. R. Red Bug Control in Southern Pennsylvania 548 
Stearns, L. A., and Hough, W. S. Spreader Tests on Apples and Peaches 198 
Summers, J. V. A Japanese Tachinid Parasite of the Oriental Moth, 
Cnidocampa flavescens 292 
A Refrigerator for Shipping Live Insects 539 
Tanquary, M. C. Relation of the Texas Agricultural Experiment Station 
to Beekeeping in Texas 113 
Turner, W. F. Kernel Spot of Pecan caused by the Southern Green 
Soldier bug 440 
Van Dine, D. L. The Effect of Leaf-Hopper Injury on the Sugar Content 
of Grapes 353 
Webb, J. L. The Pink Bollworm of Thurberia, Thurberiphaga catalina 544 
Weigel, C. A., and Doucette, C. F. Control of the Strawberry Rootworm 
in Commercial Rosehouses 283 
Willard, C. J. The Effect of CS 2 on the Germination of Seeds 388 
Woglum, R. S. The History of Hydrocyanic Acid Gas Fumigation as an 
Index to Progress in Economic Entomology 518 
Worthley, H. N. The Squash Bug in Massachusetts 
73 
