British Museum natural radiocarbon measurements II.

The second series of radiocarbon measurements made at the British Museum Research Laboratory are reported in the following list. The equipment and method used remain the same as described in the first date list [Geoscience Abstracts 1-1681], and, as stated there, the error terms are not based solely on counting statistics but are widened to include contributions of + or - 80 years for possible isotopic fractionation effects and + or - 100 years for the de Vries effect. Ages are calculated on a half-life of 5568 + or - 30 years.