Mesozoic and Cenozoic Geology and Paleontology. 15 
Pecten fraternus, Busycon tritonis, Melampus longidens, Mactra me- 
dialis, Astarte bella, A, virginica, Lirophora athleta, Dione densata, 
and D, virginiana; from Calvert cliffs, and St. Mary’s county, Mary- 
land, Surcula rugata, Bulliopsis marylandica, B. ovata, Astyris com- 
munis, A. avara, var. granulifera, and Busycon alveatum ; from South 
Carolina, Anomalocardia trigintinaria; from North Carolina, Den- 
talium carolinense, Pecten edgecomensis, Noetia carolinensis, Dactyl- 
us carolinensis, now Oliva carolinensis, and Stliquaria carolinensis; 
from Cumberland county, New Jersey, Turritella equistriata, 7’. cum- 
berlandia, Saxicava, myeformis, Carditamera aculeata, and Astarte 
distans; from California, Zyropecten crassicardo ; and from the 
Kocene, at Enterprise, Clark county, Mississippi, Crassatella producta, 
Wm. Stimpson described, from the Post-pliocene at Cape Hope, on the 
southeast side of Hudson’s bay, Cardium dawsoni. 
Along Lake Temiscamang, * the Ottawa river and Riviere Rouge, 
north of the Ottawa, the furrows conform in a general way to the di- 
rections of the river-valleys, the limits of which appear to have guided 
the moving masses which produced the grooves. The direction of the 
grooves at a single locality is not only not uniform, but, on the contrary, 
they frequently cross each other. Measurements taken at 145 differ- 
ent places in Canada show that there isno uniformity in the direction 
of the strie, but as in these cases they vary from S. 80° E, to 8. 70° W. 
Bowlders are found in great abundance in many places, especially in 
the valleys, where the bowlder formation has been extensively denuded 
by the action of the water, and its lighter materials swept away. On 
elevation s, they are often seen resting upon the unstratified drift, which, 
in the adjacent depressions of the surface, is-covered over by strati- 
fied sand and clay. They appear, in most instances, to have traveled 
southward, but there are exceptions to this general rule. Thus in the 
county of Rimonski, in the valley of the Neigette river, there are large 
bowlders of limestone, one of them 40 feet in diameter, belonging to the 
Gaspe series, which have been moved several miles northward or north- 
eastward. ‘Farther down the valley of the St. Lawrence, blocks of 
trachytic granite have been carried northeastward from the Table- 
topped mountain down the valley of the Magdalen. There are also 
instances of the northward transportation of bowlders in Nova Scotia. 
The valleys of the St. Lawrence and the Richelieu, in Canada East, 
and a considerable portion of the region between the St. Lawrence and 
* Geo. of Canada, 1863. 
