LETTER OF TRANSMITTAL. 



Ohio Department of Agriculture, 

 Division of Nursery and Orchard Inspection. 



Columbus, Ohio, December 15, 1905. 

 Hon. W. W. Miller, Secretary Ohio State Board of Agriculture. 



Sir : — I have the honor to transmit the accompanying manuscript 

 on "The Insects Affecting the Black Locust and Hardy Catalpa," by Mr. 

 E. C. Cotton, an Assistant Inspector of this Division. 



The greater part of the work on "The Insects Affecting the Black 

 Locust" was prepared by Mr. Cotton under the direction of Prof. Her- 

 bert Osborn and submitted as a thesis for the degree of B. Sc. at the Ohio 

 State University, in June, 1905. Since that time more references have 

 been consulted, and the observations made this season have been included. 

 The part relating to the "Insects Affecting the Hardy Catalpa" has been 

 prepared from the records of this Division and the reports of observations 

 made by the different inspectors, together with the recorded facts in the 

 literature already published. 



In view of the increasing importance which the planting of Black 

 Locust and Hardy Catalpa is assuming in Ohio, and the desirability of 

 having the facts concerning the pests that attack these trees placed on 

 permanent record for the use of parties interested in growing or propa- 

 gating these trees, I therefore recommend its publication as Bulletin No. 

 7 of this Division. 



Respectfully submitted, 



. A. F. Burgess, 



Chief Inspector. 



Approved for publication. 



W. W. Miller, Secretary. 



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