488 Scientific Intelligence. 
form axis having merely a very narrow membranous border. A. &. 
Professor Alexander Agassizs Zoological Laboratory at 
the museum, I have been able in my new laboratory at Newport 
to give facilities for work to half a dozen teachers (three ladies and 
d 
ny soit height. The tables for microscope work are three- 
brick walls of the building, which form at the same time the base- 
ment of the building. The rest of the floor is supported entirely 
upon the outside walls and upon columns with stretchers extending 
under the crown of the arches reaching to the northern wall. 
This gives to the microscopic work the great advantage of com- 
965 isolation from all disturbance caused by walking over the 
floor. This will be duly appreciated by those who have worked 
in a building with a wooden floor, where every step caused a ces- 
I boratory, and drawn up at a horizontal distance of 
sixty feet from the shore in a depth of some four fathoms, the en 
