Bull. U. S. B. F., 19 14. 



Plate LXXVII. 



Fig. 3. — From left to right, concrete ponds of series A. shell-testing shop, storehouse and carpenter .shop, concrete filter bed, 

 flagstaff (old position), boiler house, temporary laboratory, boathouse. 



, series D, concrete ponds, series C, and southeast portion of grounds, 

 acre in extent. (See also fig. 13.) 



The largest pond is a little more than an 



"iG. 5.— On hillside, director's cottage, and in the distance cottage of foreman, scientific assistant, and superintendent. 



foreground, reservoir and ponds, series D. 



