Jan., 1922. Annual Report of the Director. 31 



cases and made ready for the permanent arrangement of its volumes 

 and pamphlets. The four Herbarium rooms are being installed as fast 

 as cases can be obtained. The main, or Flowering Plant Herbarium, 

 is fully organized and open for reference. 



During the early part of the year the attention of the Department 

 of Geology was devoted chiefly to completing the installation of halls 

 or parts of halls which had not been worked upon up to that time 

 in order that the entire exhibition series of the Department might 

 present a finished appearance upon the opening day. It is gratifying 

 to report that by devoted labor on the part of the staff, including 

 considerable overtime work, this result was accomplished. In Stan- 

 ley Field Hall two wall cases and two floor cases were installed. Of 

 these, one of the floor cases is devoted to the large Quinn Canyon 

 meteorite, and the other to representative specimens of fossils. In 

 one of the wall cases there was installed a collection of different 

 varieties of quartz and in the other a collection of metalliferous 

 minerals. In the upper part of the wall cases the specimens are 

 installed on individual blocks fastened to the backs of the cases and 

 these blocks also serve as supports for the labels. In the other cases, 

 pedestals or the case floors serve as mounts. New bases carefully 

 designed to bear the weight of the specimens and at the same time 

 present a finished appearance, were built for two large glacial slabs 

 in Hall 34 and the specimens installed upon them. New specimens 

 received during the year for the Chalmers crystal collection in the 

 same hall were placed on exhibition in the cases containing that 

 collection and the entire collection rearranged and to some extent 

 remounted. The collection of radium-bearing minerals shown in 

 this hall was enlarged, rearranged and relabeled. In Hall 35, 16 

 tables 14 feet long and from 5 to 7 feet wide, constructed in the 

 Museum, were placed in the west half of the hall in alcove positions. 

 On these 53 relief maps were installed, the maps being grouped in 

 such a manner that neighboring localities or similar physiographic 

 types are associated in position. Two tables of smaller size at the 

 end of the hall are used to display rainfall and glacial maps of 

 the United States. The model of the Virginia Natural Bridge 

 was placed in the center of the hall. Eleven maps which had not 

 been previously framed or glazed were provided with this protection 

 and all the maps exhibited are now safe-guarded in this manner from 

 dust or other injury. Eight upright cases containing collections illus- 

 trating various features of physical geology were installed in the east- 

 ern end of the hall. Two of these cases are devoted to volcanic phe- 



