20 



SMITHSONIAN MISCELLANEOUS COLLECTIONS 



VOL. 



GEOLOGICAL AND PALEONTOLOGICAL FIELD-WORK 



The field-work of the Division of Geology during 1918 was limited 

 largely to the collection of material for the school and duplicate 

 series and for the use of the Naval Experiment Station in a newly 

 devised apparatus recently hrought into use. In connection with the 

 latter work, the head cm-ator made two trips, one through the prin- 

 cipal museums of the eastern United States, and suhsequently, one 

 extending from northern Georgia through western North Carolina. 

 In addition to the material obtained for the Navy Department, a 

 statement of which is included in a report to the National Research 



Fig. 21. — Arriving at home on the trail at eventide, and looking over the 

 horses before turning them out for the night, i'his camp, below Wolverine 

 Pass, is in one of the most interesting localities in the mountains south of 

 Lake Louise. Photograph by Walcott, 1918. 



Council, there was secured a considerable amount of bauxite, stauro- 

 lite crystals, and numerous specimens of other desired materials, 

 such as columbite, pitchblende, albite, black mica, and quartz. 



Dr. Martin, assistant curator of geology, C S. N^ational Museum, 

 was detailed to spend two weeks in \'irginia and Maryland making 

 collections of material to illustrate the weathering and decay of the 

 commoner types of rocks. A sufficient quantity of each phase of the 

 process was taken to make up 100 sets intended for distribtttion 



