Hawaii Marine Laboratory — HiATT 
Fig. 3. Floor plan of the laboratory building and dock. 
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tables on the lanai outside the laboratories. 
Pumps and motors are arranged in duplicate 
for each system, with a timer switch which 
automatically alternates the units. There is no 
storage or recirculation of sea water, but 
rather a continuous pumping mechanism. 
The large pumps are made of cast iron while 
the lines and valves are of transite, antimony- 
free lead, and hard rubber. The unit supplying 
sea water to the smaller laboratory aquaria 
consists of stainless steel pumps, lead pipes, 
and hard rubber cocks. The sea water de- 
livered is thus free from contaminants and 
suitable for the most critical embryological 
studies. The six large tidal ponds provide un- 
usual space for holding live material, either of 
small or large size. 
Laboratories are supplied with hot and cold 
running fresh water, 110- to 115-volt alternat- 
ing current, and bottled-gas outlets. Vacuum 
and pressure are achieved by portable pump 
Fig. 4. View of the laboratory building 
