Maria Mitchell: Life, Letters, and JournalsMitchell, Maria
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Maria Mitchell: Life, Letters, and Journals
Mitchell, Maria
Astronomers -- United States -- Biography; Mitchell, Maria, 1818-1889; Women astronomers -- United States -- Biography
"Jan. 1, 1855. I put some wires into my little transit this morning. I
dreaded it so much, when I found yesterday that it must be done, that it
disturbed my sleep. It was much easier than I expected. I took out the
little collimating screws first, then I drew out the tube, and in that I
found a brass plate screwed on the diaphragm which contained the lines.
I was at first a little puzzled to know which screws held this diaphragm
in its place, and, as I was very anxious not to unscrew the wrong ones,
I took time to consider and found I need turn only two. Then out slipped
the little plate with its three wires where five should have been, two
having been broken. As I did not know how to manage a spider's web, I
took the hairs from my own head, taking care to pick out white ones
because I have no black ones to spare. I put in the two, after first
stretching them over pasteboard, by sticking them with sealing-wax
dissolved in alcohol into the little grooved lines which I found. When I
had, with great labor, adjusted these, as I thought, firmly, I perceived
that some of the wax was on the hairs and would make them yet coarser,
and they were already too coarse; so I washed my little camel's-hair
brush which I had been using, and began to wash them with clear alcohol.
Almost at once I washed out another wire and soon another and another. I
went to work patiently and put in the five perpendicular ones besides
the horizontal one, which, like the others, had frizzled up and appeared
to melt away. With another hour's labor I got in the five, when a rude
motion raised them all again and I began over. Just at one o'clock I had
got them all in again. I attempted then to put the diaphragm back into
its place. The sealing-wax was not dry, and with a little jar I sent the
wires all agog. This time they did not come out of the little grooved
lines into which they were put, and I hastened to take out the brass
plate and set them in parallel lines. I gave up then for the day, but,
as they looked well and were certainly in firmly, I did not consider
that I had made an entire failure. I thought it nice ladylike work to
manage such slight threads and turn such delicate screws; but fine as
are the hairs of one's head, I shall seek something finer, for I can see
how clumsy they will appear when I get on the eyepiece and magnify their
imperfections. They look parallel now to the eye, but with a magnifying
power a very little crook will seem a billowy wave, and a faint star
will hide itself in one of the yawning abysses.
Public-domain text, read in full here on John Shaqi.
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