
          Columbus July 25 /47

My dear Doct. Torrey

A continued press of
business has until now prevented
a reply to your kind fav. [?] April
8th ret.

As to the new Asclepias -
The day before I received your
letter I sent to Gray the best
materials I had together with 
a rough sketch of the fruit.
[George] Engelmann you are aware
        