BOOK REVIEWS 197

There remains the question upon Mendelian principles of mating hybrids re- producing in each generation a small reversion to each original parent type. Were conditions such that the pure white reversions perished more quickly than others, leaving eventually only black bearers of the Old Irish names? We have the same question in all Portuguese African areas, where seemingly pure Negroes bear old Portuguese family names.

ALLEN H. GODBEY

Urgeschichtliche Religion. Die Religion der Stein-, Bronze- und Eisenzeit. CARL CLEMEN. (Untersuchungen zur allgemeinen Religionsgeschichte, Heft 4, I Text, 140 bl. Bonn, 1932.) The author is also editor of the series, of which this is the fourth. He is not the

first to undertake the summing up of all that is known to date on the subject in prehistoric times. In some respects he has delved deeper into the subject than any other author. There are abundant references to the literature on almost every page, and at the end there is an adequate index.

A full list of illustrations for the text will soon appear as Heft 5 of the series. All students of the subject have cause to thank Professor Clemen for his indis- pensable contribution.

GEORGE GRANT MACCURDY

The Mesolithic Age in Brit&. J. G. D. CLARK. (223 pp. $4.00. Cambridge: at the University Press; New York: The Macmillan Company, 1932.) The title of this work is in keeping with that used by Miss D. A. E. Garrod in

1926 (The Upper Paleolithic Agein Britab). The age covered by Clark immediately follows chronologically that covered by Miss Garrod. The two works are comple- mentary and should serve as models for prehistorians who might choose to cover earlier or later ages in Britain.

The volume begins with a preface by M. C. Burkitt of Cambridge University. Following the author’s note, there is a handy glossary of some technical terms. I n the introduction, the author points out the reasons for employing the term Meso- lilhic rather than the term “Epi-Paleolithic” proposed by Obermaier. Neither does he agree with Menghin, who would include the Mesolithic in his so-called Mio- lithic. The Mesolithic cultures are shown as belonging to a homogeneous whole. They cannot be grouped with the Upper Paleolithic as Menghin would have us do, because the close of the Upper Paleolithic coincides with the passing of the great Pleistocene era and thus forms, in itself, a very fitting close to an epoch.

Owing to its peripheral geographic position in relation to the continent, one would expect to find traces of initial continental impulses, and such-is the case. True Azilian culture has been found in northwestern Britain. Tardenoisian cul- ture from the continent reached Britain rather early. Likewise intrusive industries of southeastern Britain can be linked with the Maglemose and Campignian of the continent.