
          I wish I was going with you to Europe, but as I cannot, I
must give you many messages in charge.  You do not want Letters of introduction,
having asked none, else I could have furnished you many.
But take this Letter of mine along, & you many show it to any one of those
I mention in it, if you are not acquainted with them.

Tell Dr. Arnold that I shall deliver the plants he requires to Dr. Green
of Boston, as soon as he writes him to pay me the $110, altho' [although] I am
loath to part at 5 cents with so many fine plants of Missouri, Tennessee
Louisiana, Carolina, etc (and am paying myself as much for others of
the same localities) but I wish to have a part of my grand herbarium
in Brittain & in good hands.  I will send him also my Journal & many
tracts on Botany, etc.  Tell Prof. Hooker that as he will see the
Plants of Dr. Arnold, I need not send any more.  These will be deposited near
him I hope.  If his works (the cheapest & most compact) are not too dar
& valuable, I should like to exchange them with mine.

Tell Dr. Sealy of Dublin or Cork, who wrote me some years ago for
Exchanges, that I make but few now except of Books, and sell my plants,
fossils, freshwater shells, minerals, etc.  The the same to all the
Botanists, Conchologists & geologist you may meet in England &
France, & if they want my fine, rare or unique fossils or shells, they
must pay for them.  On this score, please to enquire particularly
abt [about] the curent price of such things, and chiefly Unios, univalves
of the Missouri, and unique fossil remains.  Audobon told me that
some large & fine Unios have sold from 5 to 10 guineas each some
years ago in England & are yet worth One guinea!  I always [crossed out:dou]
doubted this statement, altho' [although] not unlikely & was afraid to venture
my fine & unique Unios particularly as he added that if they fall
in the hands of Dears or some collectors, they are depreciated in order
to get them cheap & they sell them again very dear.  You know I was
the first disc [discoverer] & describer of those fine shells & ought to reap yet some
profit if available, and my collections ought to be worth more than
any body [anybody] else on that score.  Even here Mr. Poulfin paid me $50 for 
50 Unios.  Thus see whatever you can do for me in England & France
& if you could get for me $200 for a collection of 50 to 100 Species 
or $2 for a series & $4 for unique Specimens.  Baron Ferussac
of Paris has written me to send them all to him, as he wants to
figure them for his history of freshwater shells, but as he did not propose
to buy them.  I have postponed sending them & written him that
he must find some rich amateur to buy them for him.

You will probably see Mr. Swainson of St. Albans near London, a great
naturalist & old friend of mine, having known him in Sicily since 1809.
I wrote him 2 long letters last year to renew our corresp' [correspondence] but have no
answer yet.  Tell him the same thing, that I sell & collect for sale
every year in my travels.  Altho' [although] he buys little himself he knows those
who do.  My fine fossil shells, polyps, [illegible], Enaivites etc. could
be very acceptable to somebody.  But who?  Enquire & let me know or
put me in corresp [correspondence] with them & give them my Enumer etc.

        