With reference to my Confidential Despatch dated the 
6th February
                  last I transmit to you herewith Copies of further correspondence between
               
Sir E. Thornton and 
Mr. Fish respecting the census recently taken in 
San
                  Juan by the United States authorities, and the form of note to be
               appended to the Census Returns, as explanatory
of
 of the circumstances
               under which British subjects had been included in the enumeration of the
               population of that 
Island.