
          Ebenezer near Buffalo Feb. 4th 1857
Prof. John Torrey

Very Dear Sir
You receive again herewith 4 proofs
of Cacti. Do you not think $13 is a low price for such
an engraving as Plate XVII & XVIII is. I can say I rather
make 3 engravings of Mr. Sprague's Drawings than
such a one. Dr. Engleman speaks in his letter to Capt.
Whipple, (which was sent in the package with the Cactacaes)
that these Cactacaes could be done on steel in St. Louis
for $120 a plate.
All proofs that you will receive yet will be more difficult
yet than all that I sent you already. You will please
[crossed out: illegible] take it not a miss that I mention this.
I shall send also immediately the stone to Mr. Ackerman.
Very Respectfully
Yours
Jos. Prestele
        