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caused the following alterations to be made in the interior arrangement of 

 the building: 



The original lecture-room, in the east wing, proving to be entirely too 

 small, tlie adjoining apparatus and laboratory rooms were removed, and 

 the whole wing formed into one large lecture-room, j^rovided with seats 

 for one thousand persons. By this arrangement, the apparatus rooms in 

 the east connecting range are in close proximity M'ith the lecturer's table; 

 with which, also, direct and easy connnunicalion will be had from the 

 large apparatus museum mentioned in the sequel. 



This lecture-room, thus enlarged, being capable of containing as many 

 persons as the lecture-room which was originally designed to occupy about 

 half the lower story of the main building, the latter has been dispensed 

 with, and the space thus obtained divided — giving a room of 05x50 feet 

 as a depository of physical apparatus, and throwing the remaining space 

 mto the library. 



Besides a manifest gain of useful room by this alteration, it tends to 

 security against fire — since the lecture-room, and the researches and ex- 

 periments connected with it, will be in a separate wing, easily cut off from 

 all the other parts of the structure, by fire-proof doors of iron. 



Another change of internal arrangement is as follows: The two stair- 

 ways, that in the original plan were carried up between the middle north 

 front towers and the main building, have been dispensed with, and the 

 space they occupied added to the library; as also the central hall; and, as 

 before said, a portion of the former lecture-room. By these several altera- 

 tions, the library has been nearly doubled in area, aiid a spacious museum 

 obtained for physical apparatus. The central staircase of the north front 

 will now be carried up within one of the front toAvers. 



The changes above mentioned in the interior of the building will be 

 accomplished, on agreement with the contractor, at an extra cost of $100. 



It must be considered, however, that the large addition to the library 

 room will require a large addition to the library equipment and furniture. 

 But as it must be many years before the contents of the library can spT^ad 

 beyond its limits, as first planned, and provided for in the contract, the 

 committee would consider it unwise now to incur any portion of this con- 

 siderable expense. 



A clere story to the long upper room, or museum, oftlie centre building, 

 has been adopted by tlie committee. The architect states that this was 

 originally contemplated by him, and was explained at the time the con- 

 tract was made. The committee understand that the adoption of the re- 

 commendation was left to further consideration. They were satisfied, 

 however, that it was a necessary modification; the great length of this 

 room— nearly 200 feet— being out of all proportion to the low pitch of 27 

 feet, originally contracted for. The additional amount for which Mr. 

 Cameron, the contractor, engages to carry out this improvement, is ^2,350. 



No other alterations have been made in the building, and the commit- 

 tee think no others will be needed: none, at least, that will involve much 

 expense. 



The arrangement of the west wing and range for a temporary library 

 and reading-room, has entailed an expense of P72, which should prop- 

 erly, perhaps, be charged to the library fund. It has, however, been 

 comprised in the following statement of expenditures: 



