CONTENTS 
PAGE 
Proceedings of the Eighth Annual Meeting of the Pacific Slope Branch 
of the American Association of Economic Entomologists 
Part I. Business Session 474 
Part II, Papers and Discussions 
A Discussion of Eutettix tenella Baker as a Carrier of Curly-Top of Sugar 
Beets C. F. Stahl and Eubanks Carsner 476 
Investigations of Beet Leaf hopper, Eutettix tenella Baker, in Salinas 
Valley of California H. H. P. Severin 479 
The Relation Between the Volatility and Toxicity of Nicotine in Dusts 
and Sprays E. R. DeOng 486 
Spraying Equipment for Citrus Trees in California F. B. Herbert 494 
Notes on Nicotine Dust Progress R. E. Campbell 497 
What We may Expect from Biological Control? H. S. Smith 506 
The Present Status of Aphycus lounsburyi How. in Southern Cali¬ 
fornia H. M. Armitage 511 
The Successful Introduction and Establishment of the Ladybird, Scym- 
nus binaevatus Mulsant, in California H. S. Smith 516 
The History of Hydrocyanic Acid Gas Fumigation as an Index to 
Progress in Economic Entomology R. S. Woglum 518 
The White Snail, Helix pisana, at La Jolla, California A. J. Basinger 522 
Bees vs. Spraying R. W. Doane 527 
Some Aspects of Biological Control in Hawaii D. T. Fullaway 531 
A Simplified Method for Making Lubricating Oil Emulsions 
A. M. Burroughs and W. M. Grube 534 
A Refrigerator for Shipping Live Insects J. N. Summers 539 
The Pink Bollworm of Thurberia, Thurberiphaga catalina 
Notes on the Biology of Desmocerus palliatus 
Red Bug Control in Southern Pennsylvania 
J. L. Webb 544 
G. W. Herrick 546 
J. R. Stear 548 
Habrobracon juglandis Ashm. as a Parasite of Plodia interpunctella Hubn. 
E. R. DeOng 550 
Scientific Notes 552 
Editorial 555 
Current Notes 556 
Notes on Apiculture 561 
Horticultural Inspection Notes 562 
Medical Entomology 563 
