. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY THE TACONK1 QUESTION. 6n5 Inasmuch as the value of the evidence furnished by the fossil remains had become largely a matter of individual opinion, a committee, of which Mr. S. S. Haldeman was chairman, was appointed at the same meeting- of the association to investigate. The report, as given by this committee in the American Journal of Science for 1848, was to the effect that so far as could be determined from the fragmenta
. Annual report of the Board of Regents of the Smithsonian Institution. Smithsonian Institution; Smithsonian Institution. Archives; Discoveries in science. AMERICAN GEOLOGY THE TACONK1 QUESTION. 6n5 Inasmuch as the value of the evidence furnished by the fossil remains had become largely a matter of individual opinion, a committee, of which Mr. S. S. Haldeman was chairman, was appointed at the same meeting- of the association to investigate. The report, as given by this committee in the American Journal of Science for 1848, was to the effect that so far as could be determined from the fragmental character of the specimens submitted, Atqps and Triarthrus were not identical. but A. triMneatus was "a fossil characteristic of the stratum investi gated and named bv Professor ;. Fig. 134.—EUiptocephala asaphoides. a is a large individual much flattened by pressure; the natural joints of the slate pass through the specimen. The tail ami a portion of body are wanting. I have named this EUiptocephala asaphoides. The ellipse upon the buckler appears to be a charac- teristic marking, while the ribs and middle lobe resemble very strongly the same parts of the Asaphus tyrannns. In its perfect form the ellipse seemsto belong to the old and perfect individual. ?j is the head of a small individual of the same species. The ellipse in this individual has an anterior segment not to l»- seen in «, which I suppose may be obliterated by age. c is a fragment ei a trilobite, probably, but the ribs bear a different character from those we generally meet with. To this report Hall naturally took exception, and in the Journal for the same year reviewed the subject and published figures giving rea- sons for thinking that the distinctions noted by the committee were not ".actual and constant/1 but merely those of individuals, and reaf- firming the statement that the two forms were essentially identical. Hall was iti turn replied to by Emmons, but nothing conclusive
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