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American Anthropologist[60, 19581 northern and California Athapaskans and probably has been a basic pattern for some time, the problem remains whether there is any evidence that there was an even earlier pattern for the first ascending generation. This is what I have attempted to do by utilizing Murdock's technique of historical reconstruction. Each reader will have to determine if this approach can safely be extended beyond linguistic confirmation. He willalso have todetermine whether a comparative linguistic analysis can be used by itself to reconstruct a protokinship system without supporting evidence of the underlying social structure. In any case, the variation of terms and structure of the first ascending generation of the Athapaskans presents an intriguing problem which the present discussion hasiby no means exhausted.

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origin. H. E. Warmke outlined a new method by which induced polyploidy may be used to determine the sex heterozygote in species of plants with morphologically undifferentiated sex chromosomes. H. Roman reported on translocations involving the "B" chromosomes of maize and their bearing on cytogenetic problems. J. W. Gowen presented evidence that differences in numbers of red and white cells are correlated with differences in resistance and susceptibility to typhoid among six strains of inbred mice. The annual luncheon was attended by 138 and the society voted to meet with the A.A.A.S. in New York next December.