18 REPOET OF NATIONAL MUSEUM, 1920. 



the pointing up of cracks in the walls and ceilings in exhibition halls, 

 the painting of walls and columns, first and second floors, the placing 

 of picture molding on walls of west and northwest ranges, ground 

 floor, and in the Art Gallery, pointing up and painting walls and 

 ceilings in comfort room on third floor and rooms 223 and 22-1, 

 painting wooden floors in west north and west ranges with deck 

 paint, repointing open seams in granite stone courses and ledges 

 on outside walls and court walls, painting exterior surface of all 

 metal window frames on first and second floors, painting tin gutters 

 on roofs and replacing broken glass in the dome of the rotunda. 

 The stone steps at the south entrance were also repointed. The 

 building in the east court was remodeled by providing doors and 

 portable glass transoms on the west side. 



In the Arts and Industries Building the exterior woodwork of the 

 windows in the eight ranges, four pavilions, four towers, and rotunda 

 were painted. An additional dark room was constructed in the 

 photographic gallery, and the lunch room was scraped, pointed up, 

 and painted. A number of the walls in the exhibition halls, office 

 rooms, and laboratories were also repainted. 



In the south shed, which is occupied as a laboratory and work- 

 shop, an improved system of ventilation was installed in the macerat- 

 ing room and minor repairs of various kinds were made in skylights, 

 windows, and doors. 



The first deficiency act for 1920 provided the sum of $14,000 to 

 enable the Regents of the Smithsonian to heat and fit up for the 

 exhibition of aircraft and accessories produced by this government 

 since the declaration of war, the temporary metal structure erected 

 in the Smithsonian Grounds by the War Department, with the under- 

 standing that the custody and control of the building be transferred 

 to the Regents of the Institution by the Secretary of War. 



Immediately after the building Avas turned over to the Institution 

 in November the heating equipment, which was entirely inadequate, 

 was condemned and sold, and the proceeds turned into the Division 

 of Miscellaneous Receipts, Treasury Department, to the credit of the 

 War Department. xVrrangements were then made to heat and light 

 the building from the power plant of the National Museum. The 

 steam for the building is carried from the Arts and Industries 

 Building, beneath the roadway, through 2-inch pipes, laid in terra - 

 colt a conduit, to the southeast corner of the Aircraft Building, 

 where it is distributed to a series of radiators placed along the out- 

 side walls with a heating surface of approximately 3,240 square feet. 

 In view T of the fact that the building is to be used entirely for ex- 

 hibition purposes no attempt was made to provide the usual tempera- 

 ture of 70 degrees, as temperatures above 55 or 60 are not necessary 



