6 
these apartments, upon an entresol floor, are rooms for duplicate 
specimens, for correspondence, for microscopes, for lady artists, 
and ladies’ room. 
The library floor is 120 feet long by 60 feet wide. The ceil¬ 
ing is twenty feet in height, supported b}' fourteen wrought- 
iron columns, arranged in two rows with a space of twenty-four 
feet between the rows, the columns in each line standing sixteen 
feet apart. At the western end of the building, on the north 
and on the south sides of library, two rooms of ample size are 
provided for the botanical and entomological departments of 
the museum. These apartments are connected with the museum 
above by suitable lifts. 
On each side of the library-room are to be four apartments, 
each 11 by 14 feet, designed for the use of committees and 
students who visit the institution to consult the library or 
museum. An alcove, leading to a large window, separates and 
isolates each of these rooms. A ground glass door and a small 
window will give abundant light to each. Bookcases opening 
into the library are to be placed against the external face of 
these eight committee rooms, and it is proposed to classify the 
books, as far as practicable, in such manner that those which 
treat of the subject to be studied in each room will be arranged 
around it for the greater convenience of students. 
A gallery, the floor of which constitutes the ceiling of the 
committee rooms, surrounds the library, on a level with the 
entresol floors, and is continuous with them. It is fourteen 
feet wide, except where it bridges an alcove, and there its 
breadth is four feet, a vacancy of ten feet between its wall-side 
and the great window being left for the purpose of admitting 
light to the floor of the alcove and the library-room generally. 
A circular window, two feet in diameter, is so placed between 
each two great windows as to give additional light to book cases 
which will stand on the gallery at right angles with the walls. 
It is estimated that there is space enough on the gallery of the 
library to arrange 15,000 volumes. 
The free surface of the library floor will be 116 by 28 feet. 
The approach to the museum is through the entrance on 
