48 HEPOUT OF NATIONAL MUSEUM, 1899. 



Prof. Atreus Wanner, superintendent of the public schools of York, 

 Pennsylvania, has twice visited the Museum to utilize the Triassic 

 materials in the collections in connection with his Work on the Triassic 

 plants from near York, Pennsylvania. 



Twenty-six papers bearing upon subjects in the department collec- 

 tions have been prepared during the 3"ear, either by the staff of the 

 Museum or by those having access to the collections. These titles are 

 given in the Bibliography and need not be repeated here. 



STORAGE AND WORKROOMS. 



Much material (several hundred boxes) belonging to the Paleonto- 

 logical collections is still in storage. It is hoped that some time in 

 the near future this, too, ma}^ be made available to students. 



With the renting of the Emery Building, on Tenth street southwest, 

 the workrooms and all machinery used in preparatory^ work were 

 removed to that building, thus affording a much-needed space for 

 packing and unpacking material, and such incidental work as could 

 not properly be carried on in the offices and exhibition halls. 



In the Section of Systematic Geology there are several special series 

 of exhibits that could be prepared to advantage, such as collections 

 illustrating the geology of special areas, to include maps, sections, 

 and other drawings and photographs, besides the actual specimens. 

 A very attractive exhibit illustrating the geology and physical geog- 

 raphy of the Yellowstone Park has also been projected, but not yet 

 carried out. 



In the Section of Applied Geology there is need of special exhibits 

 illustrative of various phases of the science. Models of one or more 

 important mines, or relief maps and sections of mining regions, 

 together with samples of the ore and wall rocks, form desirable 

 exhibits, as do also collections showing the origin and derivation of 

 ore, the geological distribution of useful minerals of various kinds, 

 the qualifying conditions for artesian wells, etc. 



Several such exhibits have been projected, but are still far from 

 complete. 



In my report as curator for 1892 I announced the preparation of 

 200 sets of rocks and ores, ranging in number from 06 to 104 specimens 

 each. The last of these was sent out during the spring of 1899. Since 

 1892 other materials have been gradually accumulated, in the line of 

 both geology and invertebrate paleontology, for other sets, but no 

 opportunity has been found to put them in order. The interest at 

 present manifested in the study of soils and the problems connected 

 therewith led the curator to begin, a year or more ago, the prepara- 

 tion of 100 sets of rocks and their decomposition products, as described 

 in his work on rockweathering. This work, too, is still unfinished. 



The death of Prof. O. C. Marsh, which occurred on March 18, 1899, 



