CONTRTBUTIONS FROM THE MUSEUM OF PALEONTOLOGY

The series of contributions from the Museum of Paleontology is a medium.for the publication of papers based entirely or prin-cipally upon-the collections in the Museum. When the number of pages issued is su5cient to make a volume, a title page and a table of contents will be sent to libraries on the mailing list, and also to individuals upon request. Correspondence should be di-rected to the University of Michigan Press. A list of the separate papers in Volumes II-V will be sent upon request. VOL. I. The Stratigraphy and Fauna of the Hackberry Stage of the Upper Devonian, by C. L. Fenton and M. A. Fenton. Pages xi + 260. Cloth. $2.75. VOL. 11. Fourteen papers. Pages ix + 240. Cloth. $3.00. Parts sold separately in paper covers. VOL. 111. Thirteen papers. Pages viii + ' 275. Cloth. $3.50. Parts sold separately in paper covers. VOL. IV. Eighteen papers. Pages viii + 295. Cloth. $3.50. Parts sold separately in paper covers.-VOL. V. Twelve papers. Pages viii + 318. Cloth. $3.50. Parts sold separately in paper covers