230 
STRANGE DWELLINGS . 
Linnean Society. The experiments were made in 1856, and 
Mr. Bell’s remarks are as follow : — 
‘No. 1. Placed in an upright cylindrical vessel of water, in 
which was a rootless plant of Stratiotes , on the afternoon of 
WATER SPIDER. 
November 14. By the morning it had constructed a very perfect 
oval cell, filled with air, about the size of an acorn. In this it 
has remained stationary up to the present time. 
