Thomas Poole IMayiiard was horn in Ualtimoro, ^rarvlaiid, February 15. 

 1883. His early education was received in the Deichman Preparatory 

 School of Baltimore. He entered the Jolnis Hopkins University in the 

 fall of 1901 and was graduated from that university in the spring of 1905 

 with ihc degree of Bachelor of Arts. He entered the Department of 

 Geology in the Johns Hopkins Univ<'rsity in the fall of 1905 and has since 

 pursued graduate work under Professor Wm. Bullock Clark, Professor 

 Harry Fielding Eeid, Professor E. B. Mathews, and Dr. C. K. Swartz. 

 to whom he wishes to express his indebtedness for many courtesies. 



In 1905-1906 he was Student Assistant to Dr. C. K. Swartz in mineral- 

 ogy, and, in 1906, 1907, and 190S he was Student Assistant in economic 

 geology to Professor Wm. Bullock Clark. 



The summer of 1906 was spent in the economic development of the iron 

 ores of Columbiana Mountain, Alabama, and in reconnaissance work in the 

 Coosa and Big Warrior coal fields of Alabama. Some time was spent dur- 

 ing the summers of 1907 and 1908 under the supervision of the Virginia 

 Geological Survey and in a study of the slates of Virginia. 



The summers of 1905, 1907, and 1908 were spent under the supervision 

 of the Maryland Geological Survey in assisting Dr. C. K. Swartz in the 

 study of the Devonian of Maryland. ai;d the summer of 1908 in the field 

 work for this dissertation. 



