NATUEAL HISTORY BUILDING 87 



vided with screw holes to facilitate its removal. The connection 

 between each panel and the adjoining box is by means of four l^-inch 

 conduits, and all outlet conduits belonging with any panel center at 

 the box. The sizes of the wires to the outlets now installed are 

 Nos. 12 and 14, according to their lengths. None of the conduits 

 have been wired to their full capacity. 



The receptacle outlets for the attachment of lighting fixtures are 

 located in the ceilings, in the floors, and in the walls and inside piers 

 a short distance above the floors. They have been provided in suffi- 

 cient numbers to meet what has seemed to be all possible require- 

 ments of the future, and, while a large proportion of them will 

 probably never be utilized, their installation and the introduction 

 of the conduits leading to them during the construction of the build- 

 ing precludes the necessity for any later defacement of the walls and 

 ceilings. 



The ceiling outlets, with few exceptions, are distributed uniformly 

 throughout the four main stories, extending in three rows through 

 the ranges, and in two rows on each side of the wings, at the outer 

 ends of which there are two complete crossrows. Their spacing in 

 each row is 18^ feet, conforming to the building unit of dimension, 

 and their location is opposite the windows. This arrangement pro- 

 vides a row for each of the corridors in the ground and third stories, 

 and one for each line of rooms on one or both sides of the corridor, 

 as the case may be. The middle wing in the ground story contains 

 seven longitudinal rows, of which three are in the central hall and 

 two in the series of rooms on each side. Ceiling outlets also occur 

 in the north entrance vestibule and lobby, in the galleries of the south 

 pavilion, and in the recessed part of the south portico back of the 

 columns. 



There is likewise a close uniformity in the distribution of the 

 wall and floor outlets in the ground, first and second stories, which is 

 as follows : A single outlet is located on each of the piers of the outer 

 and court walls intervening between windows in all of these stories, 

 and also on each of the interior piers in the ground story, with a 

 few exceptions, as in the north entrance lobby and at the outer ends 

 of the east and west wings. In the first and second stories, however, 

 each interior pier is provided with two outlets, which are placed on 

 opposite sides of the pier. In the absence of interior piers in the 

 second story of the wings, a line of outlets is spaced 18^ feet apart 

 along the walls of the light wells. The floor outlets occur in two 

 longitudinal rows in the ranges, one about midway between the row 

 of interior piers and the court wall, the other at about the same dis- 

 tance from the outer wall. In the wings there are two complete 

 rows, one on each side, while in the middle or skylighted space en- 

 closed by the piers in the first story three rows are provided, but the 



