Peter, I found a copy of the letter by going to Google Books and searching for Ramsden and Pico Turquino. I assume that is the book you meant from the Torrey Botanical Club.
May I ask what is your interest in F.W. Ramsden, are you related in any way?
Are you reading from the actual consular dispatches or from his diary of the war in Cuba? You may be interested to know that he was mentioned in President McKinley's State of the Union address in Dec. 1898.
I would appreciate it if you could keep me informed of your findings.