The Bulletin
THE BULLETIN July, 1961 Number 22 ********************************************************************************* Contents News 1 In the Looking Glass – Ourselves 11 Donald E. Lown Riverhaven Site #1 and #2, Grand Isla nd, New York 13 Edward Kochan A Fishing Village on Oak Orchard Creek – Ood 6-3 14 Stanley Vanderlaan An Approach to Iroquois – White Acculturation Through Archeology 15 Charles F. Hayes III THE BULLETIN July, 1961 Number 22 ************************************************************************************* Date Lines The National Bureau of Standards in January set 5760 years as, the new, more accurate half-life of Carbon 14. This is almost 200 years more than the half-life of 5568 formerly used in calculating CI4 dates. Without rendering unusable the dates already published, the longer half -life weights the probabilities heavily toward the plus or older extreme. Thus a date given as 10,000 ± 250 years, using the longer half-life, is much more likely to be 10,250 years than 9750. Applying the above information to the date of 9652B. C. ± 600 years obtained from the Raddatz Rock Shelter in Wisconsin excavated and reported by Warren L. Wittry in "Wisconsin Archaeologist", Vol. 40, No. 2, we can see that primal occupation of this site approaches 12,000 years. It yielded an "Archaic" type of material described by Wittry (see NYSAA Bulletin 19) as falling into pattern with that of Modoc Rock Shelter in Illinois which, in its lowest level, using the longer C14 half-life, dates at about 11,000 years. The geology of Raddatz, as interpreted by Robert F. Black, shows that the vicinity became permanently ice-free and non-boreal about 10,000 years ago and soil levels thereafter lie in simple chronological super position.
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