Report of assistant director. 9 



Department XII (A). — Invertebrate Fossils, Paleozoic. C. D. Wal- 

 cott, U. S. Geological Survey, honorary curator. 



Department XII (B). — Invertebrate Fossils, Meso-Cenozoic. C. A. 

 White, U. S. Geological Survey, honorary curator, J. B. Marcou, U. S. 

 Geological Survey, honorary assistant; one clerk. 



DIVISION OF BOTANY. 



Department XIII. — Fossil and Kecent Plants. Lester F. Ward, IT. S. 

 Geological Survey, honorary curator; one clerk, one preparator. 



DIVISION OF GEOLOGY. 



Department XI V. — Mineralogy. F. W. Clarke, U. S. Geological Sur- 

 vey, honorary curator, W. S. Yeates, assistant. 



Department X V. — Lithology and Physical Geology. George P. Mer- 

 rill, acting curator; one preparator. 



Department XVI. — Metallurgy and Economic Geology. Fred. P. 

 Dewey, curator. 



Some additions and changes in this classification are contemplated.* 



These twenty-seven departments and sections are administered by 

 twenty-four curators and acting curators, of which number at present 

 only nine receive salaries from the Museum appropriation. Of the re- 

 maining fifteen, five are connected with the Geological Survey ; one the 

 Bureau of Ethnology ; two with the Fish Commission ; two with the 

 Army; one with the Navy, and one with the Agricultural Department. 



6. THE ADMINISTRATIVE STAFF. 



The only change made in the classification of this branch of the 

 Museum work is the addition^ of a department of labels under the 

 charge of Mr. A. Howard Clark. 



The administrative departments are at present organized as fol- 

 lows: 



Department A (Direction). — This department is under the immediate 

 charge of the Assistant Director, and embraces the general supervision 

 of the routine work of the other departments, in addition to the per- 

 formance of his special duties as the executive officer of the Museum, 

 such as the care of the installation of specimens, the construction of 

 cases, the purchase of supplies, the assignment of work and apartments, 

 leaves of absence, correspondence, &c. 



Mr. E. I. Geare, executive clerk, has rendered most efficient service 

 in this department, both in the management of the correspondence of 

 the Museum and in the work of preparing the Museum report. 



* The departments of Exploration and Field Work, Chemistry, Experimental Physi- 

 ology, and Vivaria are still unorganized, although Mr. John A. Ryder, embryologist 

 of the U. S. Fish Commissi on, is frequently referred to in the case of accessions 

 whose special features are related to embryology and physiology. These accessions 

 are alluded to in index B to Part IV, under Department XVII. 



