July 2k, 1859 



Dr. George Engelmann in Frankfort a/M. 

 Esteemed Sir! 



For a long time it has been my intention to write to you in St. Louis, in order 

 to introduce myself to you as an eager Pteridologist and to obtain your good will. 

 I understand that at present you are spending sorne time in Frankfurt a/M and am 

 taking this opportunity of a shipment to Dr. Haag GutenbergC?) there, to enclose 

 this letter to you and to ask if through your kindness I could obtain some North- 

 American Filices (?) in exchange. I would particularly like Equisetum laevigatum 

 and E. robustum AI. Br., the N. A. Isoetes and Marsileas ~£ . I do not doubt 

 that I could off er you something useful in exchange. 



Also, the publication recently received by the Botanical Society in Regensburg 

 and undoubtedly translated by you into English: "A. Braun, on the North American 

 Speeles of Isoetes and Marsilea" would be welcomed by me. - At present I am working 

 on a Nomenolator Filicum (?) and there I endeavor to bring together the literature 

 as compjetely as possible. Both of your works in Syllimann's Am. Tourn.: "Kunze 

 Notes on some Ferns of the U.S." and "A Monography of the N.A. species of the 

 genus Equisetum " I possess through the kind Information from Prof. AI. Braun. 



Recently in the treatise of the local Nature - Historical Society I published 

 a small essay about the Filices , known until now from Chile, and take the liberty of 

 sending you herewith a copy. 



Asking you to pardon this letter and hoping that it will be possible and 

 pleasing for you, to be of assistance to me in my pteridological work, I remain in 

 all esteem, 



Sincerely, 

 W. Sturm 



Postscripts ? 



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