322 Scientific Intelligence. 
over Northwestern Ohi running in all directions and having all 
altitudes up to 200 fee 
Th e oo. as ozars, or sand-bars thrown up by t the 
action of currents and waves. Besides these sandy deposits —_ 
are numerous places known as ae sedan ridges, where the 
has been denuded from the rock, the boulders found in the drift 
being left in the immediate vicinity, usually in a belt round the 
bases of these ridges. The rock in such cases is water-worn and 
wrought into fantastic shapes, common about rocky shor 
These sandy deposits of Lacustrine origin frequently obscure the 
true glacier moraines for great distances, and have often been con- 
founded with them. 
he superficial lamination of the clay about Defiance, Ohio, he 
ores to the action of the waters of the St. Joseph and St. 
He aed the existence of these moraines as a confirmation 
of the theory of Prof. Agassiz, and read off by proportions! 
numbers the manner of retreat of the ice. The halting puns 
separated by the following figures; 15; 15; 2; 35; 34; * 
. L., Detroit Tribune of Aug. 31. 
z Note on Tinoceras shapes. 3 if O, C. Marsu. te fe 
name eee anceps, there eer: ae to he a 
of this animal a are similar to usenoe Mansion eieageh parts of 
onograph o, Ly ee he Fossil Crustacea belonging t 
art III, Pterygotus and Slimonea yous 
71-120, plates -absliga by Henry Woopwarp, F.G.S., F.2Z5., 
the British Museum. 4to. es 1872. a for the _—_ 
seersphien) Sasiens, —The first part o memoir 
the volume of the Salecmonrah en Society for 1865 “pub 
