
          P.S. I enclose a leaf of my doubtful Betula. I should like
 your opinion of the species. I thought, when I collected it, from the
 bark of the trunk that it was B. papyracea. And I am not yet
 satisfied whether it is not. Unfortunately withoutspecimens, I cannot
 decide the matter. I am the more desirous of your decision, because this
 comes under notice in an article for a N. Car. Gazetteer now in
 preparation.


 As to Spach [Spach?], he seems to leave all [underlined: all] Genera in more confusion
 than he finds. He is much too Rafinesquian [Rafinesquian?].
        