FRESH WATER DIATOMS. 
315 
Rothesay 
Surface Temp. 53° 
Sp. Gr. Surface 
1.000 4 feet 
1.000 
Indiantown 
i i 
“ 49° 
{ < 
1.011 lOfaths. 
1.012* 
Land’s End 
i 1 
<< 52° 
( i 
< t 
1.005 5 " 
l.OlOf 
Miydsh 
i i 
“ 53° 
1 1 
1.002 2 “ 
1.004f 
Gregory’s Point 
“ . 54° 
i i 
1.000 5 “ 
1.010* 
Gregory’s Point 
i i 
< 1 
( ( 
1.002 12 “ 
l.OlOf 
Mouth of Nerepis 
“ 69°.8 
( ( 
1.000 2 “ 
l.OOlf 
Mouth of Nerepis 
i 1 
“ 69°.8 
< < 
1 1 
1.000 2 “ 
i.oooii 
It would appear from the above that the lowest temperature 
recorded, that at Indian'town, with the tide at half flood, is 
49°, or 17° above the freezing point. This is only a little more 
than a mile above the Falls at the mouth of the river, and where 
there is a strong upward current from the sea. The temperature 
at 'the several points on the Kennebecasis varies but little from 
53°, though, except at Saunder’s Cove, the depth of observation 
did not exceed two fathoms. *On the main St. John the surface 
temperature was nearly the same about Grand Bay and the 
Milkish, but rose to 54° at Gregory’s Point and to 69.8 at the 
mouth of the Nerepis. 
Taking the specific gravity of the water at the mouth of the 
Nerepis and somewhat removed from the main channel of the 
river as unity to the depth of two fathoms, we find that off 
Gregory’s Point nearly opposite, but within the channel, also 
1. 000 at the surface, but i.oio at a depth of five fathoms and 
1. 016 at the depth of twelve fathoms, both observations being 
on the flood. At the Land’s End, three miles below, the surface 
density was 1.005 but at a depth of five fathoms i.oio, the same 
as at Gregory Point. Finally, at Indiantown, while the surface 
density was i.oii, that at ten fathoms was but little more, or 
1. 012. Thus it would appear that the density for some distance 
above the Falls, where the water is subject to powerful currents 
and frequent reversals of direction, is practically the same at all 
depths, but from the Milkish up a considerable difference is 
observed between the surface density and that of a depth of a 
few fathoms, the fresh water of the river evidently flowing over 
the salter water brought in by the tide. 
Flood. Flood. IFull Flood. HEbb. 
