
          P.S. Present my best respects to Dr. Gray, & also
my congratulations on his appointment to the exploring
expedition. If they have health, & good fortune, and,
though last, not least, good humor among themselves, 
the gentlemen cannot fail to have a 
most interesting & delightful cruise, barring [added: some]
hardships & privations, to which they must make
up their minds. Tell Dr. G. [Gray] if they do not sail before
May, next, I hope to be able to furnish him
with a copy of my Chester County flora, if he will
give it a place in his library. I could not be
otherwise than proud to have a work 
of mine visit the South Pole under
such auspices.
        