February 3, 1899.] 



SCIENCE. 



163 



wealth of the State. Forms are annually 

 placed in the hands of the producers of 

 mineral products, which upon their return 

 are filed at the ofBce of the Survey. In this 

 manner an accurate account is kept of the 

 mineral products of the State, which aggre- 

 gate in value from six to seven million dol- 

 lars annually. 



The work of the Survey has been system- 

 aticallj' divided and a competent man 

 placed in charge of each one of the divi- 

 sions. Dr. E. B. Mathews, in addition to 

 his duties as Assistant State Geologist, is 

 Chief of the Division of Geology of the 

 Piedmont Plateau ; Professor Charles S. 

 Prosser is in charge of the Division of Ge- 

 ology of the Appalachian Region, and Dr. 

 George B. Shattuck is in charge of the 

 Division of the Coastal Plain. The work 

 of the Survey embraces many subjects re- 

 lated to geology, among which is the in- 

 vestigation of our highways. Dr. H. F. Eeid 

 being Chief of the important Division of 

 Highways. Dr. L. A. Bauer is in charge 

 of the Division of Terrestrial Magnetism. 

 Several special assistants in charge of in- 

 dependent lines of work are also employed : 

 Mr. A. ]Sr. Johnson in Highway Engineer- 

 ing ; Dr. Cleveland Abbe, Jr., in Physiog- 

 raphy, and Messrs. Basil Sollers and B. W. 

 Barton in Botany. 



At the same time active cooperation is 

 maintained with several of the Washington 

 bureaus, especially with the U. S. Geolog- 

 ical Survey and the bureaus and divisions 

 of the U. S. Department of Agriculture. 

 The aid which has been rendered by the 

 Washington scientific departments has been 

 of great importance to the successful prose- 

 cution of the State work. 



The topographic work of the Survey has 

 been much extended during the past year, 

 an area of several hundred square miles 

 having been surveyed upon a scale of one 

 mile to an inch in western Allegany and 

 Garrett counties. The surveying force is 



provided by the U. S. Geological Survey 

 through a plan of cooperation between the 

 national bureau and the Maryland Geolog- 

 ical Survey. 



The magnetic work under the charge of 

 Dr. Bauer was continued in the western 

 part of Maryland. Dr. Bauer completed 

 his work on the western boundary of the 

 State during 1897, and was able to be of 

 great service to the Attorney-General of 

 Maryland, who had the matter in charge. 

 All the magnetic and astronomical work 

 was placed in charge of Dr. Bauer, and he 

 was throughout recognized as the scientific 

 authority upon the State force. During the 

 summer of 1898 a part of Dr. Bauer's time 

 was taken up in the survey of the boundary 

 line between Allegany and Garrett coun- 

 ties, which had been authorized by a spe- 

 cial act of the last General Assembly. This 

 work, which had been many times unsuc- 

 cessfully attempted, was satisfactorily ac- 

 complished, and a report published in Sep- 

 tember. 



The more strictly geological work of the 

 Survey was carried on by the instructors 

 and students of the Geological Department 

 of the University, with such cooperation as 

 was deemed necessary along special lines. 

 Professor George P. Merrill, of the United 

 States ISTational Museum, rendered the Sur- 

 vey a very important service in the conduct 

 of the investigations upon the building and 

 decorative stones of the State. Extensive 

 areal and economic work was conducted 

 both in the western and central counties of 

 the State. Surveys of Allegany and Gar- 

 rett counties were completed and a large 

 amount of data collected for the special 

 economic reports which will appear later. 



The highwaj' investigations have occu- 

 pied the attention of the Survey since the 

 spring of the present year, and a consider- 

 able force was employed under the direction 

 of Dr. Eeid and his associate, Mr. Johnson, 

 in the study of the highway conditions of 



