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SCIENCE. 



[N. S. Vol. XI. No. 285. 



responding position on the other side of the 

 reading room, and opens into the main mor- 



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ward, and also receive indirect light from 

 the hallway through numerous glass panels. 







phological laboratory. These laboratories The instrumental equipment of the labora- 

 are illuminated by windows facing north- tories comprises a number of microscope 



