BuL. U. S. B. F., 1908. 



Plate XC. 



Fig. I. — Floating labo^ator^■ and rearing plant from the port side. The forward (left) house 

 serves as a laboraton.' and the after one as the engine house and tool room. Most of the 

 rearing cars are covered with white awnings. 



Fig. 2.— General view of the plant from the outer rear corner. In foreground one of the cars 

 shows the propeller shaft and faint indication of propeller blades in the water. 



