942 



SCIENCE. 



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



responding positiou ou the other side of the 

 reading room, and opens intothe main mor- 



ward, and also receive indirect light from 

 the hallway through numerous glass panels. 



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phological laboratory. These laboratories 

 are illuminated by windows facing north- 



The instrumental equipmeut of the labora- 

 tories comprises a number of microscope 



