SURVEY OF LAKE TAMBLEGAM. 61 



Station 154. — 1^ fathom. Sand and mud. Nothing. 

 Station 155. — H fathom. Sand, mud, and weed. Nothing. 

 Station 156. — 2 fathoms. Mud. Nothing. 

 Station 157. — 2 fathoms. Hard sand. Nothing, 

 Station 158. — | fathom. Mud. Nothing. 

 Station 159. — | fathom. Mud. Nothing. 

 Station 160. — -| fathom. Sand. Nothing. 

 Station 161. — ^ fathom. Mud. Nothing. 



Explanation of the Charts. 



[Scale of all the Maps is 1 Nautical Mile = If Inch.] 



1. Map of Lake Tamblegam, showing principal beds (after Hornell). 



2. Map of Lake Tamblegam , giving the stations referred to in present 

 report. 



3. Map of Lake Tamblegam, giving the depths in fathoms. 



4. Map of Lake Tamblegam, giving the nature of the bottom. 



5. Map of Lake Tamblegam , giving the distribution of living oysters. 



6. Map of Lake 'lamblegam, giving the distribution of dead shells. 



7. Map of Lake Tamblegam, giving the joint distribution of living 

 oysters and dead shells, thus indicating roughly the " potential area." 



