Note B — FOSSIL IMPRESSIONS.—I.

Mr. Marsh was a mechanic of the town of Greenfield, and procured his subsistence by his daily labor. Being employed by Dr. Deane in obtaining the sandstone slabs of Ornithichnites, he acquired a taste for the pursuit, entered into it with extraordinary ardor, and accumulated by his own labors a great collection of fine specimens. He unfortunately fell into a consumption, and died in 1852. The collection was sold at public auction for a sum between two and three thousand dollars. The specimens were purchased by the Boston Society of Natural History, by Amherst College, and by various colleges and scientific associations in this country.