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which entered into force this day, and the desire of your Government 

 to place on record the understanding of our Governments with respect 

 to the manner in which certain provisions of that Convention shall 

 be applied. Accordingly, I take pleasure in informing you that, 

 without prejudice to the provisions or purposes of the Convention 

 under reference, my Government concurs in the understanding set 

 forth in your note as follows : 



With respect to Article I, paragraph 3, of the Convention, which 

 establishes the proportion of joint expenses to be paid by each High 

 Contracting Party, it is understood that "the proportion of the total 

 catch from the fisheries covered by this Convention utilized by that 

 High Contracting Party" shall be the part of the total catch which is 

 used for domestic consumption in the territorj^ of that High Contract- 

 ing Party or is the object of commercial . transactions the financial 

 benefits of which accrue entirely or in their major portion to individ- 

 uals or firms whose proprietors or stockholders are domiciled in the 

 territory of that High Contracting Party. 



With respect to Article II, subparagraph 4, of the Convention, it is 

 understood that the Inter- American Tropical Tuna Commission is 

 authorized to engage in fishing and other activities for scientific re- 

 search exclusively and that no commercial ventures by the Commission 

 are contemplated. 



It is further understood that, notwithstanding the specific powers 

 conferred upon the Commission, nothing in the Convention shall be 

 interpreted as a relinquishment of or a limitation upon the sovereignty 

 of a High Contracting Party over waters under its jurisdiction. 



My Government has also taken note of your statement that certain 

 provisions of the Spanish text might have been more clearly expressed 

 but that your Government recognizes that the authentic Spanish text 

 of the Convention is that contained in the Convention as signed. 



Accept, Excellency, the renewed assurances of my highest considera- 

 tion. 



Dean Acheson 

 His Excellency 



Seiior Don Mario Echandi, 



Appointed Ambassador of Costa Rica. 



