I9I5-] 



Fauna of the Chilka Lake : Introduction. 



BAY or BENGAL 



SEA MOUTH 



Text-fig. i. — The specific gravity of the water of the lake in February and March, 1914. 



At this period we were unable to visit the north-east end of the lake owing to the shallowness of the water. The 

 specific gravities recorded in the main area varied from 1 -00575 to 1-0115. A sudden change occurred at Magger-Mukh,l 

 the outer channel being filled with water as salt as that of the Bay of Bengal. 



BAY of BENGAL 



Text-fig. 2. — The specific gravity of the water of the lake in September, 1914. 



During this month the water-level was some 6 ft. higher than in February and March ; Nalbano I and several of the 

 islands in the outer channel were submerged. The north-eastern part of the main area was filled with fresh water, as 

 was also the outer channel as far as the sea-mouth. In the south-western end of the main area the specific gravities 

 ranged from 1-002 to 1-0065. 



See detailed map, Plate II 



