
          Cambridge Mch [March] 24 1858


 Dear Dr,


 Thanks for the promise
 of some of Whipple's specimens.
 The "Century of Ferns" you
 ask about is a selection from
 Hooker's Icones Planterum.
 on somewhat larger paper
 It is an inconvenient thing
 that the number of th same 
 plates in the Icones are 
 not given in the Century.
 I had a copy of it, but
 gave it to a fellow going
        