THE 



1 *>^ * n ' 



JOHNS HOPKINS., V 

 UNIVERSITY CIRCULAR 



EDITED BY THOMAS E. BALL 



New Series. 1917, No. 3 MARCH, 1917 Whole Number, 293 



CONTRIBUTIONS TO 

 GEOLOGY 



GEOLOGICAL SURVEYS WITH SPECIAL REFERENCE 



TO THE WORK OF THE MARYLAND 



GEOLOGICAL SURVEY 1 



By WILLIAM BULLOCK CLARK 



A discussion of the organization and work of a Geological 

 Survey would not be complete without some introductory 

 words regarding the origin of geological surveys. 



Geological knowledge has been advanced by the individual 

 working independently either in a private capacity or under 

 university or similar auspices,, or by a group of individuals 

 brought together in an official organization, controlled gen- 

 erally in large measure by the lines of investigations to be 

 followed. Cooperation is of course possible in the first case 

 but not absolutely necessary, while team-play is an essential 



1 Part of a discussion before the Scientific Association of the Johns 

 Hopkins University. 



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