. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 78 EDUARD UHLENHUTH. Mr. Johnson informed me soon after my arrival in San Marcos that the blind white salamander has been seen in his well, and in fact this well has yielded us more salamanders than any other place. It is shown in Fig. 3. The well is located in the valley of Purgatory Creek, a short distance above where the creek enters the plain. Part of the flat valley is visible in the figure. Near the well is a sink hole (Dris- kel's Water Hole, see diagram, Fig. 4). The well was dug from. FIG. 3. Frank Johnson's Well. S
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 78 EDUARD UHLENHUTH. Mr. Johnson informed me soon after my arrival in San Marcos that the blind white salamander has been seen in his well, and in fact this well has yielded us more salamanders than any other place. It is shown in Fig. 3. The well is located in the valley of Purgatory Creek, a short distance above where the creek enters the plain. Part of the flat valley is visible in the figure. Near the well is a sink hole (Dris- kel's Water Hole, see diagram, Fig. 4). The well was dug from. FIG. 3. Frank Johnson's Well. Showing the well house and at the right of the well house the dry and flat valley of the Purgatory Creek. a level of 613 feet1 above sea (San Marcos Court House 620 feet) to a depth of 317^ feet. There a cave was struck which now communicates with the well through a slit in the well bot- tom, as indicated in the diagram (Fig. 4). From this slit the water rose to from 3 to 5 feet in the well. This makes the sur- 1 Altitudes above sea level were measured by means of an anaeroid barome- ter and therefore are only approximately correct (within several feet). Di- mensions other than altitudes were measured directly, except when otherwise Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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