58 BULLETIN 816, U. S. DEPAETMENT OF AGKICULTURE. 



The Importation into the United States of the Parasites of the Gipsy Moth and the 

 Brown-Tail Moth. (Entomology Bulletin 91.) Price, 65 cents. 



The Dispersion of the Gipsy Moth. (Entomology Bulletin 119.) Price, 20 cents. 



The Green-Striped Maple Worm. (Entomology Circular 110.) Price, 5 cents. 



The Oak Pruner. (Entomology Circular 130.) Price, 5 cents. 



The Dying Hickory Trees : Cause and Remedy. (Entomology Circular 144.) Price, 

 5 cents. 



Flour Paste as a Control for Red Spiders and as a Spreader for Contact Insecticides. 

 (Entomology Circular 166.) Price, 5 cents. 



Three Undescribed Heart- Rots of Hardwood Trees, Especially of Oak. (Journal of 

 Agricultural Research, vol. 1, No. 2.) Price, 25 cents. 



A Serious Disease in Forest Nurseries Caused by Peridermium filamentosum. (Jour- 

 nal of Agricultural Research, vol. v, No. 17.) Price, 10 cents. 



The Chestnut Bark Disease. (Separate 598, from Yearbook of the Department of 

 Agriculture for 1918.) Price, 10 cents. 



Practical Tree Surgery. (Separate 622, from Yearbook of the Department of Agri- 

 culture for 1913.) Price, 10 cents. 



Forest Tree Diseases Common in California and Nevada. (Forest Service Unnum- 

 bered Publication.) Price, 25 cents. 



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