150 THE CORRESPONDENCE OF SCHWEINITZ AND TORREY 
Mr. Casstrém of Stockholm sent me the other day a new & 
very | .. . *] work by Fries of Lund.- Systema mycologicum [23] 
sistens Fungorum ordines, genera et species huc usque cognitas, 
quas ad normam methodi naturalis determinavit, disposuit atque 
descripsit E. F. 1821 &c. The arrangement is totally new &, 
I think, much superior to Persoon’s. The 1st volume (about half 
of the work) only is published & as it has just come to hand I 
have not had time to examine it much. Have you seen it? If 
you could be very certain of returning it in two months I would 
send it to you. It is probable, however, that I shall have another 
copy ere long, & if so, you shall have one of the two. 
Next Saturday (when a packet sails for Petersburg) I shall send 
Agardh’s books together with some plants which I hope you will be 
pleased with. My questions respecting the specimens will be put 
on the labels. 
I am exceedingly anxious to procure specimens of American 
Algae—one set for myself and another for Agardh, with whom I 
have corresponded several years. Mr. Elliott sent me some lately, 
which I had not seen before. Have you any duplicates of those 
you have found near Salem? Can you spare some— 
I want some Southern insects very much & will give in ex- 
change for them European insects, or rare American plants & 
minerals—to any extent. Will you find a person to collect for 
me? I have only room to say I am sincerely yours 
JoHN TORREY 
P.S. The list of Hepaticae will be inclosed in another letter. 
TORREY TO SCHWEINITZ 
NEw York, Oct: 12th, 1821 
Dear Sir 
This day I shall put a collection of plants & books on board 
a Petersburgh packet which sails tomorrow. I hope they will 
reach you soon & that some of the things may prove acceptable. 
I wrote you a long letter a few days since in answer to your favour 
of April last which I had shamefully neglected. 
On the next page is a catalogue of the contents of the package 
on which I have to make a few remarks—. I. The Cryptogamous 
* (Page torn.] 
