Recording thermograph, protected by bullet-proof shield (on Gage board, attached to iron fence posts driven into the lake 



post), mail box and iron pipe; used in making continuous water bottom, set up in March, 1938, to be used for measuring water 



temperature record. levels. 



Tame rice, planted to provide grain for wildlife, was serious- 

 ly damaged by muskrats, July, 1939. 



Broken concrete held in place by heavy woven-wire fencing 

 protects the levee from craj-fish and muskrats. 



f^V.4 



Inexpensive spillway suitable for small lakes with limited Bluegill nests left exposed by low water in Fork Lake, 



drainage areas. September, 1939. 



PLATE I 



