264 
The best exposure of the Lowville with overlying Black river and under- 
lying Pamelia is on the State Road about one mile northeast of Lowville and 
in the several quarries nearby in the field along the limestone scarp. The coun- 
try from here slopes southwest exactly with the dip of the rocks. Nothing 
higher than Black river is exposed. The Lowville weathers to a light drab 
or dove color, but some of the layers are darker and occasionally almost as 
dark as the Black river. The calcite tubes are always present in the Low- 
ville except towards the base. In most of the layers they are extraordinarily 
abundant; usually perpendicular within the strata and lying horizontally at 
the surface. They are probably plants. 
Fossils other than plant tubes are rare. Some of the thinner layers are 
ripple marked. 
The whole mass of the Lowville must be 30 or 40 feet thick. Very little 
of the underlying Pamelia is seen. 
The low country to the east and north of the exposure shows bosses of the 
Pre-Cambrian, and several of these are very near the bottom of the limestone 
scrap, so that the base of the limestone cannot be far below the lowest expos- 
ure on the State Road loeallity. 
The Black river (Leray) is dark colored and lumpy, thick-bedded, weath- 
ering to a light color but not so light as the Lowville limestone. It is massive 
in fresh exposure, showing the characteristic yellow streaks and blotches. 
Columnaria, Tetradium and Stromatocerium are abundant.  Silicified 
Bryozoa of large size are present. Near the base Strophomena is common. 
Leperditia is usually common throughout. In fact, the characterisites 
are practically the same as in the Mohawk Valley and at Valcour Island. The 
contact between the Black river and Lowville is usually very even and in 
unweathered masses appears merely as a slight change of color accompanied 
by the disappearance of the calcite tubes. Sometimes the contact is some- 
what uneven. It is evidently a disconformity. 
SPECIES FROM THE WATERTOWN SECTION. 
A short distance up the river from Watertown a collection was made from 
the lower Trenton, containing the following species: 
1. Batostoma winchelli spinulosum Ulrich.............. ¢ 
2 ,WDalmanella testudinaria (Dalman)e- 7... 22-5. eee ¢ 
See eallopora amp ls CU Chi) ii. esse teen ene ere a 
