
          closed, instead of a "dead bracing"! The construction
proposed by Dr. M, I am inclined to think, all
things considered will be found superior to my
others. I hope by and by to make some experiments
on this point but at present have no 
time to devote to it.

But a day or two before your letter arrived
I had been turning my attention to the remains
of infusoria or rather the articles that have appeard
on the subject and was [?] to
search for them in this [?] but [?]
nothing as yet. I will endeavor to obtain some
specimens from Stamford. How high a magnifying
power is required to discover them?

Will it be asking too much of you to 
request you to get a stop-cock made for me 
by the workmen to whom you refer? I wish it
make to command the generator and [?]
and sufficient length to be attached to the
[?] rather than the [?] of the generator
and [?] as I understand was the case
with yours. If it should be convenient for you
to attend to it I wish it made strong and substantial
but the outside may be left in a rough
state, all the labor being expended upon  it
that may be necessary to make it answer
perfectly the purpose for which it is designed
and no more. If it can be made and

        