166 



April 17, 1920. 



Board of Commissioners of Ag-riculture and Forestry, 

 Honolulu, T. H. 



Gentlemen : — For some time past there has been some trouble 

 in regard to potato shipments coming into the Territory. These 

 shipments when infested with scab or eel worms can easily be con- 

 demned and returned to the port of debarkation. Despite the 

 fact that a number of shipments have been returned and notice 

 sent to shippers here as well as on the Coast regarding scabby 

 potatoes, yet there seems to be a lack of co-operation on the part 

 of the Coast shipper. I have complained to the Director of 

 Agriculture of California and to the Deputy Horticultural Quar- 

 antine Officer and they have both replied that all horticultural 

 produce shipments coming into the San Francisco market do not 

 fall under their jurisdiction, nor have they any control over ship- 

 ments leaving the Coast for these Islands. They both, however, 

 suggest that the Commissioners take some action regarding the 

 matter and demand inspection certificates at the port of debarka- 

 tion for horticultural products. 



I, therefore, recommend that the Board of Commissioners pass 

 an order that the steamship companies at the various ports on the 

 Pacific Coast be requested to demand an inspection certificate for 

 certain horticultural products that are being shipped to these 

 islands and also that all importers of horticultural products in 

 these islands be notified that such an order has been issued and 

 to take the necessary steps to comply with the order. By such a 

 method we shall be able to keep a better record and will without 

 doubt receive a better grade of produce. 



Respectfully yours. 



(Sgd.) E. M. Ehrhorn, 



Chief Plant Inspector. 



The Horn-Fly Problem 



By D. T. Fullaway, Entomologist. 



There are a number of flies which utilize the dung of cattle and 

 horses to accomplish their development from ova to mature in- 

 sects and among them several blood-sucking flies, notably the 

 horn-fly, a serious pest of live stock. This fly is most constant 

 in its attention to stock and appears only to leave the cattle to 

 deposit its eggs, which it does on the fresh droppings. In our 

 equable climate, furthermore, it propagates continuously ; there is 

 no winter cessation of activity and depletion of numbers, on the 



