
          Polypodium dryopteris, Asplenium montanum, or
 Osmunda claytoniana. I suppose that you will convict
 several of the Botrychiums of assuming an alias. I
 have no specimen of Polypodium Flexagonopterum, and
 shall be much obliged by a specimen of Asplenium pinnatifidum.

 I intend going out to Europe in the Steamer of the
 16th December, for a short visit, and shall be very
 happy to be of service to you in any way in my power.
 I shall probably return in March.

 I will endeavour to get a copy of Schke? Filices. I had
 abandoned the thought of sending for it as I believe
 the text is in German, and I do not read the language.

 My brother Dr. Boott will I know be always very happy
 to hear from you, and I hope you will not let your
 correspondence with him die away.

 Believe me my dear Sir
 Yours very faithfully
 W. Boott
        