NATURAL HISTORY BUILDING 117 



is increased to the extent of the difference. On the other hand, the 

 terra cotta furring introduced against the sloping mansards reduces 

 the width of the ranges by 2 feet 4 inches. The only detached piers 

 are the two at the outer ends of the east and west wings, and the 

 single one at each corner of the ranges, the others, all confined to 

 the wings, being attached to the walls of the light wells, from which 

 they project 17 inches, their width being 23 inches. 



This story is used almost entirely for laboratories and the storage 

 of reserve collections, but contains the principal business offices. It 

 is subdivided in accordance with the typical plan, as described else- 

 where, and is exceptionally well lighted, containing scarcely any dark 

 spaces and none that is not serviceable. All of the rooms, except 

 closets, have one or more windows or double windows, according to 

 their length, while the corridors receive light in abundance from the 

 glass panels in the doors, the transoms above the doors and the bor- 

 rowed lights in the walls of the light wells, besides the window at 

 the northern end of the north and south corridor in each range. 



The assignments of space are approximately as follows : The east 

 wing is mostly occupied by the department of geology, including the 

 office of the head curator, the divisions of systematic and applied 

 geology and mineralogy, and a part of the collections of fossil inverte- 

 brates, but also contains the office of the head curator of biology. The 

 division of paleontology is continued into the east range, the entire 

 eastern section of which is used for fossil invertebrates and fossil 

 plants. 



The department of anthropology begins in the northern section of 

 the east range, which contains the divisions of physical anthropology, 

 ethnology and historic archeology ; and in the north wing it occupies 

 the rooms at the north end as offices and nearly the entire eastern 

 side for the division of prehistoric archeology. In this wing, adjoin- 

 ing the south pavilion on each side, are the comfort and toilet rooms 

 and the main housekeeping rooms for the third story, and on the 

 west side is a suite of rooms designed for restaurant purposes. 



In the west wing the rooms along the south front are used for busi- 

 ness offices, while two large rooms at the end of the wing and the 

 entire space between the light well and the court wall are occupied 

 by the division of birds. The western section of the west range is 

 entirely devoted to the division of mollusks, and the northern sec- 

 tion, with the exception of two small rooms adjoining the middle 

 wing, to the division of insects. 



As the width of the corridors may seem unnecessarily great, it 

 should be explained that no part of this space is to be regarded as 

 wasted, since the installation of storage cases along the sides was con- 

 templated in the plans, and it has already become necessary to make 

 use of them to some extent in this manner. In fact, by this arrange- 



