
          your Flora is completed.


 I read with much interest and profit Dr. Gray's
 able communications in the July no [number] of Sill. Jour. [Silliman's Journal]
 as well as some previous ones and ardently hope
 they will be continued. The [illegible] of a 
 complete Chevalier would be a pleasure that
 I must forego for a while, as my [authority?] for
 weeks on pupils &c are and will be heavy for these
 hard times. 


 The leaves of 1/4 8th inch focus is the 32nd of an [added: inch]
 if I rightly comprehend it. I have a doublet
 of 1/20 inch focus which is nearly the same power
 as yours of 1/2 line. Please to send me the 1/4 8th
 inch and one of as low a power as 1/4 inch if convenient.
 A micrometre graduated to the 500th of
 an inch I think would be the most useful. If
 the above articles can be inclosed in a letter and 
 sent by mail you will much oblige me by
 doing so. Some of Ehrenberg's papil infusoria
 will be gladly accepted.


 We (Mr. Jones & myself) have not yet recd [received] the last
 2 nos. of your Flora N.A. [North America]. A small balance is probably
 [added: due] on them. Whatever it may be, as this amt [amount] due if
 any on the lenses [illegible] more than the $20 will be sent by
 mail immediately. My best respects to Dr. Gray.


 Very respectfully your most obedt [obedient] A. Clapp
        