[Various (1967)] the two are approximately equivalent. Carbon 14 labs are not yet ready to release a full calibration of real and C14 ages but it is in making. According to the formula being tentatively used in the meantime the real or annual date of the Twombly hearth would be 5550 B. P. The real date of the Croton Point shell midden (Brennan 1963:14) tested at 5863 ± 200 (Y 1315) would be 7108 B.P. The real No. 39, March 1967 11 date of the Otter Creek phase hearth at Sylvan Lake Rockshelter (Funk, 1966; a.22) C14 tested at 6560 ± 100 B. P. (Y-1655) would be (since the discrepancy begins to decrease after 6000 B. P.) between 7500 B. P. and 8000 B. P. This curve of divergence will go far to explain the puzzling absence of remains in the Northeast between the fluted point manifestations at Bull Brook (Byers 1959:427) with an average of several C14 dates of about 9000 B. P. and the Archaic horizon, since all C14 dates so far obtained will move back uniformly. It is curious to note that the original 5383 age of Lamoka, through coincidence or some principle not yet understood is of the proper order of true age, according to the new calibration. As of this writing C14 ages are still in effect, certainly for comparative use. The 4750-4725 B. P. ages of the Twombly hearth and dated Taconic point neatly bracket the age of 4730 ± 80 (Y 1535) obtained by Funk at Sylvan Lake Rockshelter on a Vosburgian phase (Laurentian) hearth.