
          into water, charcoal & a few drops of an Ethereal body like the 
 heavy oil of wine formed when making C2H from alcohol & So3HO.
 The charcoal is very fine [crossed out: illegible] in scales & perfectly fine
 would it not be a good method of obt'g. [obtaining] pure charcoal for abstract
 determination? When cold SO3HO & resin act together a 
 brown powder is the result which appears to be an [?] of the
 SO3 with the resin acids. It is [laterally?] permanent in the air but
 I find it difficult to examine as when placed in HO it separates
 the Sulph'c. [sulphuric] acid at once & white resin falls. In alcohol this
 change comes on more slowly. Under Turpentine it preserves well for some
 days but gradually this Turpentine darkens, thickens & the whole becomes
 a partly homogenous mass. I enclose you some of the compound
 of acid & resin. I hope ultimately to do something with it. I 
 have had to lay it by to take up some silver ([Galina?]) ores &
 some [?] pyrites for determination the ores come from Sonora.
 I should like to have a little "[Iridosmine?]". I got a sample
 of Gypsum in white powder the other day from Amherst County Va
 which yielded me only 10 [?] or 1 [Eg?] or water. It was in
 process of degradation from a variety of Rhomboidal Selenite.
 I have not seen it any where stated as containing only 1 Eg. of H.


 The 7th volume of the P.R.R. Reports is binding and will be issued shortly.
 Six vols are not you ought to ask [Cochrane?] or some other [M.C.?]
 to send you the copies. Try also to get a copy of Emory's boundary
 survey if you have not yet had it. I have directed the
 seeds to be forwarded to your City address (office). The
 Ass' [Assayer?] department is out of flower seeds. Brown and I are
 on middling good terms only. Some months ago I wanted
 to get some agricultural analysis from that bureau, but 
 he took care of Jackson. I hope when you come to
 Washington you will come to my house & make it your abode.
 It will be [more?] in the City than the
 Smithsonian Inst [Institution] is and I will try & make you

        