DESCRIPTION OP THE LABOEATORT AT PLYMOUTH. 97 



on the north and 4 ft. wide on the west and south sides ; fur- 

 ther the excavation has been extended between the cellars 

 and the Citadel wall to form two reservoirs for salt water, 

 each 37 ft. 6 in. long, 21 ft. 6 in. wideband 13 ft. deep, and 

 each capable of holding* 50,000 gallons. The roof of a 

 portion of each of the reservoirs (Plate I, r) is 6 ft. higher 

 than the remainder and is fitted with a gangway {t) to 

 enable a man to walk inside. These reservoirs are built of 

 concrete and coated with a special asphalte supplied by 

 Messrs. Leete, Edwards, and Norman, of London; they 

 are arched in with brick and completely covered over. 



The arrangement of rooms in the building is as follows : 



Cellars. — The cellars (Plate III) are 13 ft. high, and 

 consist of an engine room, 20 ft. by 16 ft. ; a boiler room, 

 20 ft. by 11 ft.; an engineer's room, 13 ft. by 11 ft.; a coal 

 cellar, store room, and w. c. Access to the cellars is 

 provided for by means of steps down into the area on the 

 north side. 



Ground Floor, West Bloch. — The rooms on the ground floor 

 (Plate I) are 12 ft. high. The main entrance to the building 

 is in the centre of the west face of this block, and leads, on 

 the one hand, by means of a straight passage 6 ft. wide 

 direct into the aquarium, and, on the other hand, by means 

 of a staircase 9 ft. wide to the first floor. A urinal is placed 

 leading from the landing of this staircase. On the south side 

 of the entrance are two rooms to serve as kitchen and bed- 

 room for the caretaker of the building ; these rooms are 

 each 14 ft. by 12 ft., and between them is a pantry 9 ft. by 

 6 ft. On the north side of the entrance the scullery and 

 ofiices for the caretaker, the staircase leading to the first 

 floor, and a " Receiving Room" 20 ft. 6 in. by 16 ft. are 

 placed. 



Centre. — The central part is occupied by the aquarium 

 from the east end of which a door leads into the 



East Bloch. — On the north side of this block is Labora- 

 tory II, 17 ft. 6 in. by 16 ft. ; on the south side Laboratory 

 III, 15 ft. by 9 ft. The remainder of this floor of the 

 block is occupied by the kitchen and oflices of the Super- 

 intendent's residence. The main entrance to the residence 



VOL. I, NO. I. 7 



