EDITORIAL FOREWORD 



sued. To obtain necessary funds to complete the publication, an appeal was made 

 for a grant from the Penrose Fund of the Geological Society of America, which 

 was generously given, thus removing the last obstacle in the way of printing. 



In addition to the several changes of plan and the many hands through 

 which the manuscript has passed, there has been the additional difficulty of putting 

 it through the press without the help of the chief author. The finished result, 

 therefore, is not what it otherwise might have been, and more particularly copy 

 for a number of Prof. Woodworth's plates could not be located, a fact which ac- 

 counts for the incongruous lack of sequence in the plate and map numbers, and 

 their order of appearance. In fairness to Prof. Woodworth it should also be stated 

 that a large amount of valuable material had to be omitted in order to reduce the 

 cost of the report, and the effect of this will be much more obvious than if the 

 original author had been able to adapt the rest of the memoir to these omissions. 



Acknowledgement is made to the U. S. Geological Survey for transfers of 

 the engraved topographic maps, and to C. A. Weckerly, Chief of the Section of 

 Illustrations of the Federal survey, who with assistance by O. W. Goodloe, pre- 

 pared the geologic maps and drawings at the expense of the Museum of Compara- 

 tive Zoology. Valuable assistance was also rendered at various times by Wm. C. 

 Alden, of the Survey, in getting text, maps and illustrations ready for publication, 

 but owing to pressure of other duties Mr. Alden did not have the opportunity to 

 reexamine the manuscript after the revision by Mr. Wood. He did, however, 

 read the entire galley proof, making numerous helpful suggestions, and Dr. L. W. 

 Stephenson, the author of the section, "Collections of Upper Cretaceous Fossils" 

 (of Marthas Vineyard), read and corrected this part of the memoir. The U. S. 

 Coast and Geodetic Survey, R. S. Patton, Director, was so kind as to permit re- 

 production of certain plates published in their reports to illustrate this memoir. 

 Also thanks are due to Professors Kirtley F. Mather and Kirk Bryan, who very 

 kindly read the whole manuscript in an effort to eliminate any errors, and who 

 made many valuable suggestions. Finally, very sincere thanks are due to Mr. 

 Ludlow Griscom of the museum, for preparing the report for the printer and 



reading all proof. 



Edward Wigglesworth 



