214 



THE POPULAR SCIENCE MONTHLY 



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Sectional Plan of the First Two Buildings of the Zoological Station. 

 A, building containing (a) aquarium and (6) library; B, individual laboratories. 





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Sectional Plan of the Laboratory for Comparative Physiology (C) and 

 connecting Building around the Court. 



lates through the aquaria and finally runs into a sand-filter in the base- 

 ment to be again pumped into the upper tanks. Every fourteen days 

 a fresh supply is pumped in from the sea. A perfectly developed system 

 of collecting enables the institution to exhibit the most beautiful and 

 interesting animals of the bay of Naples in large numbers and in the 

 best condition. A little book published in Italian, German, French 

 and English gives, in simple language, just such a description of the 

 animals, their habitat and behavior, as will appeal to the public. There 

 are many " happy families " formed upon long observation of the 

 different kinds of animals that may live together without acquiring too 

 marked a taste for one another. The aquarium containing the coral 

 animals is constructed like a grotto under the arch of which one sees 

 the orange-colored polyps spread about like marigolds. Some of the 

 related anemones are actually old, as is shown by their long, wrinkled, 

 thick-skinned bodies, but their straight, or slightly curled tentacles of 

 purple, or lavender, or cream-color, or brown, are most beautiful. 



