104 UNITED STATES IfATIONAL MUSEUM 



occupied by the anthropological workshops and two by the library, 

 the remainder being at present utilized for miscellaneous purposes. 

 In the eastern section the entire space along the front, divided into 

 three rooms, is used by the section of vertebrate paleontology for 

 laboratories and storage, and the corresponding space on the court 

 side by the division of geology for workshops and storage. 



We^t range. — Of the two partition walls bounding the corridor in 

 the east range only one, that on the inner side, is repeated in this 

 range, where it also serves the purpose of enclosing a corresponding 

 series of rooms overlooking the west court. The remainder of the 

 range, measuring 31 feet 11 inches wide on the north side and 35 

 feet 4 inches wide on the west side, is open throughout its entire 

 length of about 335 feet except for a vestibule enclosure in front of 

 the freight elevator and the entrance to the west wing, a small com- 

 partment at the northwest corner of the range, and a room measuring 

 21 feet 10 inches by 20 feet 6 inches, adjoining the north entrance 

 lobby. The latter room is used for the telephone exchange, but 

 otherwise practically the entire range, with a floor area of 16,260 

 square feet, is occupied by the division of mammals, the large hall 

 containing the main series of cases for the storage of skins, and the 

 several rooms serving as laboratories and for the storage of the 

 smaller specimens and of special collections. 



North wing. — The principal feature of the north wing is the large 

 central hall, extending from the north entrance lobby to the south 

 pavilion with both of which it communicates by means of large 

 openings. A singularly impressive effect is produced by the four 

 longitudinal rows of massive piers, of which the two inner rows are 

 25 feet 2^ inches apart, leaving the median part of the hall unob- 

 structed to that extent. The piers in these rows measure 3 feet 

 If inches by 3 feet lOf inches, which is also the size of those in the 

 lateral rows, but the latter enter into the construction of the side 

 walls, from which they project only 2 feet 7 inches. Between the 

 inner and lateral rows on each side the distance is 7 feet 3^ inches. 



This hall was designed for exhibition purposes and also serves as 

 a foyer to the auditorium, but being entirely ceiled over its only 

 sources of natural light are the opening into the north lobby and 

 the borrowed lights along the upper part of the side walls. Electric 

 lamps suspended from the ceiling provide an excellent general system 

 of illumination, which will, however, probably require to be supple- 

 mented by additional lamps at lower levels whenever collections are 

 installed. 



The series of rooms on each side of the central hall, facing the east 

 and west courts, have an average width in the clear of 30 feet 

 5 inches, the other dimension of the several rooms varying from one 

 to three units. The northernmost room on the east side, already 



