eee —— 
THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 131 
My friend Rev. J. Van Vleck altho very zealously attached to 
the study of botany is on account of his age no longer able to collect 
plants. But Mr. Denke on the other hand, with whom I have 
planned for the next year two excursions into our southern moun- 
tains—promises great activity & I hope thro’ his means chiefly to be 
_ enabled to procure for you, Mr. Cooper, & Mr. Halsey, from whom 
I have received a letter which is answered by the enclosed & by a 
little package contained in your box, & other friends everything 
that we can get at. I was not a little pleased to find that you 
correspond with so many of the European botanists—especially 
with Agardh in Stockholm whose Species Algarum [3] I most 
earnestly desire to procure & beg you to let me know what is the 
title in full. Perhaps you may be able to let me have some Euro- 
pean Cryptog., if you are supplied with duplicates—& I shall try to 
communicate to you occasionally a list of those I possess in order 
to see whether you can do so. No supplement to Persoon [59] 
has ever been published to my knowledge. But a most excellent 
work on the Fungi by Nees von Esenbeck [53] (barring the non- 
sensical metaphysics which pervade the reasoned part of it) full of 
the most accurate observations & truly deep reflexions entirely in 
the German language is in my hands, which will be of great ad- 
vantage. There isa volume of Copperplates belonging to it which 
renders the book pretty dear. I am now anxiously expecting the 
box you have sent on to me, by the return of the waggons which 
take the one I send you to Petersburg. It would be a fine plan to 
keep boxes continually under way in this manner. Should you 
have opportunities to send on directly from New York to Peters- 
burg in Virginia Addressed to Caldwell & Orr it would greatly 
facilitate the business (giving me notice as often as you have sent 
them a box) & if you in that case would so desire it, it would per- 
haps be equally advantageous for me to order what I can send you 
directly from Petersburg for New York. My project of writing a 
work on Am. Cryptog. will depend much on the contributions I 
may receive from others. I am sorry to observe that not all 
American botanists are as free as yourself in comunicating their 
observations—which I cannot comprehend—it always being my 
greatest pleasure todo so. I now advert to the contents of the box 
I have made up to you it contains 1) 237 Phaenogamous plants 
