ATKINS THE SALMON AND ITS ARTIFICIAL CULTURE. 277 



Table III. — Record of temperaiure at hafahing-liouse, <^'C. — Contiuued. 



T.\BLE IV. — Observations on temperature of Penobscot Hirer, at and near Buchsport. 



[Station 1 i.s in the entrance of the " Thoroughfare " that separates Buck.sport from Orphan Island, 

 and receives, with the Hood-tide, a great deal of water from over extensive muddy tlats, which warm it 

 up in sunny weather, and on cool nights may have the opposite etfect. Being on the east side of the 

 river, the morning sun has less etfect than it would on the western shore. Depth, about 30 feet. 



Station 2 is iu the main channel, opposite Fort Kuox, and the tide was so strong that no satisfactory 

 observations of bottom-temperature were secured. 



Station 3 is at the southern end of Orphan Island, (town of Verona.) in close proximity to a good 

 salmon-weir in the current, that sets up and down the western or main channel of the Penobscot. 

 Depth, about 30 feet at low water. Observations here made at or a little before low water, each day.] 



State of tide. 



Low .slack . . 



Flood 



...do 



Ebb 



Flood 



High slack . 

 Low water . 

 Low slack . . 

 High slack . 



Mrs. 



8i 

 lOi 

 9i 

 2 

 8 

 12 



Weather. 



Clear ... 

 ...do ... 

 Shower 

 ...do ... 

 ...do .. 

 ...do ... 

 Clear... 

 ...do ... 

 ...do ... 



Temperature of water. 



Station 1. 



46 



Station 3. 



