LETTER OF TRANSMITTAL 



To His Excellency Edwin Warfield^ 



Governor of Maryland and President of the Geological Survey 

 Commission. 



Sir: — Somewhat over three years ago the first volume of a series of 

 reports dealing with the systematic geology and paleontology of Maryland 

 was presented to the public. This publication which to the average 

 reader might seem highly technical was most favorably received by geo- 

 logical experts both in this country and abroad. I now have the honor 

 of presenting to you the second of this series which, on account of its size, 

 is issued in two parts. It deals with a division of Maryland geology 

 that has received the attention of students for nearly a century. The 

 present work includes a summary of previous observations to which is 

 added a large amount of new information. On account of the highly 

 technical nature of this report it is perhaps fitting to state that a clear 

 comprehension of our geological formations is based on a knowledge not 

 only of the materials out of which the strata are composed but also of the 

 remains of animal and plant life which the rocks contain. In order 

 therefore that our results may receive the recognition of geologists now 

 and in the future, accurate descriptions and illustrations have been con- 

 sidered to be requisite. The several authors of this report, many of 

 whom, as explained later, are among the best known authorities in 

 America upon the subjects herein discussed, have supplied chapters that 

 will place the Maryland Miocene deposits conspicuously before geological 

 workers everywhere. 



Trusting the volume submitted may merit your approval, I remain. 



Very respectfully, 



William Bullock Clark, 



State Geologist. 

 Johns Hopkins University, 



Baltimore, October, 1904. 



