Nov., 1910.] ANNUAL REPORTS. 41 



pact, working hand-book on insect pests. \\ itli this arrangement, any impor- 

 tant change in the means of control of a given insect could be followed by the 

 issuance of a new sheet which would take the place of the one formerly in use. 

 [1 is important that the correspondence <>f this department be thoroughly 

 cross-indexed, and that adequate records be kepi of specimens sent in for 

 identification. For this work additional assistance is needed. 



Publications of this Department. 



« 



Publications by this department in the current biennial period were as 

 follows : 



Bulletin 143, Xew Hampshire Experiment Station, December 1909, pp. 48, 

 Fig. 29; "The Codling Moth and How to Control it by Spraying," by E. D. 

 Sanderson 



This bulletin gives in popular form the practical results of the investigation 

 of 1907 and 1908 published in detail in the nineteenth and twentieth reports 

 There are many calls throughout the state for the information contained in 

 this bulletin 



Scientific Contributions No. 3, New Hampshire Experiment Station, 1909, 

 pp. 16, plates 5; I. "The Oblique-banded Leaf-roller," by E. D. Sanderson 

 and A. D. Jackson; II. "A New Insectary," by E. D. Sanderson. 



The first of these gives in detail the results of an investigation of an insect 

 outbreak at Madbury, N. H. 



The second describes and pictures the new insectary of this department. 

 (Reprinted from the Journal of Economic Entomology, Vol. II, December, 1909.) 



Scientific Contributions No. 4, New Hampshire Experiment Station, 1910, 

 pp. 28, Fig. 21; "The Relation of Temperature to the Growth of Insects," 

 by E. D. Sanderson 



A discussion of some of the data obtained in experimental work conducted 

 by this department, as a part of the investigation of the relation of temperature 

 to insect growth and hibernation. (Reprinted from the Journal of Economic 

 Entomology, Vol. Ill, April, 1910.) 



Other Publications. 



By W. C. O'Kane: 



"Work on the Apple Maggot," Journal of Economic Entomology, Vol. Ill, 

 April, 1910, pp. 169-172. An outline of the investigation planned and in 

 progress at this station. 



'Heating the Railroad Worm," The New England Homestead August 13, 

 1910, pp. 1, Fig. 2. A popular account of the life history of this pest and recom- 

 mendations as to means of control. 



"Spray Formulas in Terms of Kitchen Utensils," The Garden Magazine, 

 June, 1910, pp. 294-296, Fig. 10. Directions for the preparation of spray 

 materials in small amounts suitable for the garden or for limited areas. 



"The Ohio Powdery Mildews," The Ohio Naturalist, Vol. X, No. 7, May, 

 1910, pp. U')6-176, pi. 2. Technical descriptions and lists of food plants of 

 the twenty-four species of powdery mildews known to exist in Ohio. 



