Buu. U.S. B. F., 1917-18. PLATE LXVII. 
Fic. 1.—Pond No. 4, Series D, showing fringe of Carex stricta around the margin. 
Fic, 2.—The cinder road along the north sides of ponds Nos. 1, 2, 3,and 4. To the left is seen the upland grass field 
which served as a roosting place at night for the dragonflies. 
