CONTEXTS V 



Page 

 W. B. Heums. Economic Entomology from the View Point of the 



Sanitarian 355 



G. W. Herrick. Notes on Three Shade Tree Pests 169 

 W. O. HoLLisTER. Tobacco Extracts, Their Comparative Values 



as Insecticides 263 

 T. E. Hollo WAY. The Poison Exponent : a Symbol of the Toxicity 



of Chemicals in their Relation to Insects 452 

 J. S. HousER. The Gooseberry Gall Midge or Bud Deformcr, RhO' 



palomyia grossulariae 180 



Sciara sciophila Larvae Congregating in Chains 399 

 L. O. Howard. The Activity of ProspaUella berlesei Howard against 



Diaspis pentagona Targ. in Italy 325 



S. J. Hunter. The Sand Fly and Pellagra (Abstract) 61 



A Recent Decision of the Supreme Court of Kansas 207 



W. D. Hunter. The Outbreak of Alabama argillacea in 1911 123 



Results of Experiments to Determine the Effect of Roentgen 



Rays upon Insects 188 

 A. H. Jennings. Some Problems of Mosquito Control in the 



Tropics 131 



O. A. Johanssen. Wire Worms in Corn and Potatoes 97 



V. L. Kellogg. Distribution of Ecto-parasites (Abstract) 357 

 Frederick Knab. Unconsidered Factors in Disease Transmission 



by Blood-sucking Insects 196 



C. L. Marlatt. Some Recent New Importations 73 

 Inspection and Certification of French Nursery 



Stock 83 



Haven Metcalf. The Chestnut Bark Disease 222 

 F. B. Milliken. The Position Assumed by Female Grasshoppers 



when Ovipositing * 232 



William Moore. The Tick Problem in South Africa 377 



J. B. Norton. The Present Status of the Crown Gall 230 



W. C. O'Kane. Methods in Insect Photography 54 



F. B. Paddock. The Sugar-beet Web Worm, Loxostege sticlicalis 436 

 P. J. Parrott. The Occurrence of the Pear Thrips in New York 184 

 P. J. Parrott and H. E. Hodgkiss. The Susceptibility of Adults 



and Eggs of Pear Psylla to Spraying Mixtures 193 



E. M. Patch. Woolly Aphid Migration from Elm to Mountain Ash 395 



L. M. Peairs. a Third Brood of Codling Moth in Kansas in 1911 243 

 W. D. Pierce and T. E. Holloway. Notes on the Biology of Che- 



lonus texanus Cress 425 



A. L. QuAiNTANCE. Discussion of Codling Moth Work 159 



G. P. RiXFORD. Fructification of the Fig by Blastophaga 349 

 A. H. RosENFELD. Insects and Spiders in Spanish i\Ioss 338 

 H. M. Russell and F. A. Johnston. The Life History of Telrasti- 



chus asparagi Crawf. 429 

 V. I. Safro. Lime-Sulfur Wash an Inefficient Ovicide for Codhng 



Moth 385 

 H. H. P. Severin and W. J. Hartung. Will the Mediterranean 



Fruit Fly, Ceratitis capilata Wied., Breed in Bananas under 



Artificial and Field Conditions? 443 



