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September 23, 1861: Clayton

September 23, 2011

Mitchell Canyon 02

Lower Mitchell Canyon, looking toward Clayton; by Tom Hilton, on Flickr

Camp 57

[Today] I rejoined my party with Professor Whitney. They were camped at the foot of Mount Diablo, on the north side. We found a noted German traveler, a Mr. Jagor, from Berlin, who has been on a tour of four or five years to Asia, the East Indies, the Philippines, etc. He spent several days with us. He was a quiet, inoffensive, and unassuming man. He has taken elaborate notes and sketches of the countries visited and has over 1,700 drawings.

Mount Diablo is a bold peak nearly four thousand feet high, which rises quite abruptly on the north side, and is one of the most extensively seen objects of the state. Because of its central position and the great distance that it is visible from every direction, a point on the top is the starting point of all the surveys of the state. The Coast Survey determined its position–latitude and longitude–and the land surveys started from the same point, a base line and meridian being run through it.

4 Comments leave one →
  1. September 24, 2011 8:51 am

    Here is a less than fully satisfying photo of the baseline and meridian marker on Mt Diablo:

    (Not suggesting a replacement of the landscape photo at all!)

  2. September 24, 2011 8:52 am

    Ah, no html. Here is a less than fully satisfying photo of the baseline and meridian marker on Mt Diablo:

  3. William H. Brewer permalink*
    September 26, 2011 8:18 am

    Cool! Is it okay if I use that in a later post (Brewer spends a lot of time on and around Mt. Diablo)?

  4. October 2, 2011 5:13 pm

    Absolutely. I took it when my spouse and i were in a GIS class — we were becoming acquainted with the importance of those survey marks. We also went to the tricounty marker where the Santa Clara, San Mateo, and Santa Cruz counties meet. I don’t suppose Brewer would have been engaged in county line reviews.

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