NATURAL HISTORY BUILDING 121 



The apportionment of floor space by subjects, so far as it has been 

 determined, is given in detail in the last of the tables, from which it 

 will be observed that of the total of 468,118 square feet furnished by 

 the building, 233,273 square feet, or one-half of the entire area, has 

 been dedicated to the public, comprising, besides the exhibition halls 

 in the wings and ranges, the main floor and galleries in the south 

 pavilion, the auditorium, and the vestibule and lobby at the north 

 entrance. The amount of space occupied for the storage of collec- 

 tions and for the laboratories is 158,989 square feet, and the remain- 

 der is divided between the heating and power plant, the shops for 

 the maintenance and repair of the building and furniture, the busi- 

 ness offices, the comfort rooms, housekeeping, the stairs and ele- 

 vators, etc. 



AVAILABLE FLOOR SPACE OF THE BUILDING 



Wings and ranges. 



Square feet 



Ground story. — East and west wings, eacti 24,995 square feet; north 

 wing, 23,170 square feet; east and west ranges, eacli 17,052 square 

 feet 107,264 



First story. — East and west wings, each 24,995 square feet ; north wing, 



23,896 square feet; east and west ranges, each 17,052 square feet 107,990 



Second story. — East and west wings, each 15,927 square feet; north 

 wing, 14,794 square feet; east and west ranges, each 17,052 square 

 feet 80,752 



Third story. — East and west wings, each 16,475 square feet; north 

 wing, 15,399 square feet; east and west ranges, each 16,192 square 

 feet 80,733 



Attic story. — East and west wings, each 16,606 square feet ; north wing, 



15,224 square feet 48,436 



South pavilion. 



Ground story, 11,684 square feet ; first story, 11,490 square feet ; second 

 story, 5,605 square feet; third story, 5,695 square feet; fourth or 

 attic story, 6,244 square feet 40, 718 



Total floor area of the building 465, 893 



South approach. 

 Vault enclosed by the masonry of the south approach 2, 225 



Total floor area of the building and approach 468, 118 



