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Hatsell assisted Professor Wilson during the summers of 1898 to 1901.
In A History of the Federal Biological Laboratory at Beaufort, North Carolina, Grave’s annual report of 1905 reported that Hatsell, one of the few permanent employees, lived on
In 1910, preparations were made at the lab to enlarge the scope of the terrapin work through construction of a new 10,000-gallon tank and two additional concrete ponds. The concern for operations on a larger scale was the lack of a fish and terrapin culturist who could devote himself unhampered by other duties.
In 1913, however, the problem was resolved when “the opportunities for engaging in propagation work were advanced by the addition of the position of fish-culturist.” Of course, it was none other than "Charlie" Hatsell, “who showed a great deal of natural ability in carrying out the cultural experiments with the diamondback terrapins,” who filled this new position.
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In 1923, in a Bureau of Fisheries resident agent’s report, R.L. Barney reported his analyses of “unorganized notes” of past investigators, but noted “the systematic observations carried on under their supervision by Charles Hatsell, the terrapin culturist stationed at Beaufort , N.C. , since the experimental work was begun.” Barney praised Hatsell and gave him “the large share of credit for the continuity and the accuracy of the observations of the entire experimental terrapin propagation project” as a result of “his exceptionally careful, energetic and faithful work.”
With these excellent commendations from all his associates, Hatsell was made Acting Superintendent of the Beaufort Biological Station in 1921, a post he held until 1925. According to R.E. Coker, Hatsell “had to serve, by special arrangements with the Civil Service Administration, as Director.”
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"Charlie" Hatsell was the son of Julia Ellen Mace Hatsell and George Andrew Hatsell. He married Marie Ella Clawson, born in 1876, daughter of Mary and Charles Clawson of