134 



Treubia Vol. Ill, 2. 



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Plan No. 2. Main building of the Laboratory for Marine Investigations at Batavia. 

 1 = office for the Chief; 2 = laboratory for the Chief; 3 = zoological assistant's 

 laboratory; 4 = hall; 5 =^ collectionroom; 6 = chemical and physical laboratory; 7 = 

 strangers' work room; 8 =z library; 9 — native draughtman's office; 10 — overseer's 

 office. 



Dimensions: Length of the whole building from West to East: 36 M.; room no. 1: 

 M, 8.40 — M. 6.15; room no. 2: M. 7.60 — M. 7; room no. 3: M. 7.80 — M. 6.50; room 

 no. 7: M. 10.50 — M. 6. 



are filled in with expanded metal and plaster, owing to which a light but 

 durable building is obtained. The sea-water aquarium, Lloyd's system, 

 which forms part of the Laboratory for Marine Investigations, was ready 

 for use in September 1922. 



Firstly, this aquarium will provide a means of studying the live ani- 

 mals of the Java Sea. Further, it will be possible to connect hatching jars 

 for fish eggs to the water circulation ducts. 



It needs very little demonstration to show that this aquarium, which 

 in the course of time will be available to the public during certain hours, 

 has also educational value. 



Photo No. 5 shows the aquarium building (2, Plan No. I) seen from 

 the South East- This aquarium building, which is partly below ground 

 level, is constructed of reinforced concrete throughout, with the exception 

 of the roof, the walls and the ceiling of the top portion. 



The walls of the top portion consist of a framework of teak, filled in 

 partly with plastered brick, and partly with expanded metal and plaster. 



The subdivisions of the top portion of the aquarium building, where 

 the tanks are situated, are to be seen from Plan No. 3. 



The measurements of the two large tanks (1, Plan No. 3) are 3.65 

 M. by 1.65 M. by 1.20 M., the capacity therefore, of each of these two 

 tanks, is fully 6000 L. 



