314 
HULLETIN OF THE NATURAL HISTORY SOCIETY. 
The occurrence of marine species at considerable distances 
from the sea, — for example that of Triceratium alternans fifteen 
miles from the mouth of the St. John at Harris’s Cove, that of 
Amphiprora alata at Perry’s Point and Ingleside, the former 
locality twelve miles and the latter fourteen miles from the sea, 
and further of Biddnlphia aurita, Coscinodiscus radiatus and 
Grammatophora marina at Harris’s Cove, along with Surirella 
ovata, Navicula didyuia and Tryblionella scntellum. — is in 
accordance with facts observed elsewhere. Thus in the Hudson 
River, marine forms, mingled with those of fresh water types, 
are found in slightly brackish water^ at least sixty miles from 
the mouth of the stream, while in Florida forms regarded as 
marine, and common on the Atlantic seaboard, were found by 
my father, the late Prof. J. W. Bailey, at Lake Munroe, two 
hundred miles from the mouth of the St. John’s River. 
Similarly, in the Thames, in England, marine forms in large 
numbers are found at points at least fifty miles from the sea. 
The rapid and alternating currents which traverse the lower St. 
John as the result of exceptional tidal flow in the Bay of Fundy, 
must be especially favorable to the wide dispersion and 
commingling of their microscopic contents. The occasional 
finding of a Foraminifer and the occurrence at several points 
of the Infusorian Distephaniis speculum, common in the Bay of 
Fundy, are further indications of the introduction of marine 
types into the waters of the lower St. John. Sponge spjcula are 
common in nearly all the collections. 
As bearing upon the question of distribution, discussed 
above, the following list of hydrographic observations in the 
lower St. John and Kennebecasis waters is appended: 
HYDROGRAPHIC DATA ON DIATOM LOCALITIES. 
Millidgeville 
Surface Temp. .51° 
Sp. Or. Surface 1.003 2 faths. 1.007 
Hillhurst 
“ “ 5.3° 
“ “ 1.003 2 “ 1.006 
.Matthews Cove 
“ “ 53°..*] 
; “ “ 1.005 1 “ 1.008 
Saunder’s Cove 
“ “ .53° 
“ “ 1.005 10 “ 1.006 
Perry’s Point 
“ “ 53°.c 
) “ “ 1.004 1 “ 1.004 
