
          of minerals from Sweden & Norway. It contained a few
specimens of white [yttrocerite?], carbonate of [?]
[fluoride?] of cerium, cerine & sever other specimens from
that quarter. I have already divided with Mr. Hayes but I
have no doubt I can find some smaller piece for you if you
have them not. Also polymignite & pyrochlore. Do you know
anything of microlite except what has been in Silliman? I do not
understand how [Charles Upham] Shepard is so wise as to say that he has proved it
to be columbate of lime & in the next page to admit that the probablity of
the lime being an accidental ingredient. I think I never read such a
schoolboy production as his, full of errors from beginning to end. & did
not know anything of him but I learn unanimously that he is
not the least authority is conceded to anything emanating from him.
I have one very fine pyrochlore from Sweden with modifications
in the angles & edges. It is detached and weighs 6 grains. I have 
another full as large from the Ural Mountains & the largest
I have found from Chesterfield weighs about 5 grains. Do you
know that singular mineral vermiculite from Millbury which
when expposed to the blowpipe or even before the flame of a candle expands
into hexahedral [added: micaceous] vermicular length with all manner or writhing &
contorsions. There is a mineral called I think Housemannite which
[?] in the same way but in a fan shaped form. I cannot
immediately call to mind its locality & I am writing at the counting
house without my books. If you do not know it I can send you
a piece. We have lately recd some very fine apophyllites from
Nova Scotia, but they were nearly all purchased here immediatly 
on their arrival. If you have not seen them I think I can get a piece.
The form is differen from the Bergen apophyllite.
        