..."highlands" of the Hudson might also have interposed barriers to an outlet across the state of New York. A single communication only would then exist...has existed across the strait of Mackinac, cutting ofT lake Michigan, and perhaps lake Superior, from the lower lakes. Now if we supposed that the erection...

...highlands" of the Hudson might also have iijf terposed barriers, to an outlet across the state of New York. A single communication only would then exist...viz: through the valley of the Mississippi. That the lak^s once discharged their waters in this direction, such additional evidence is furnished by the...

...the St. Lawrence and the Highlands across the Hudson, serving as barriers is suggested, in which case "a single communication only would then exist with...serves to add confirmation to the general opinion." The existence of a barrier at Mackinac, cutting off Lakes Michigan and Superior, with the closing of...

...Appalachians serving as the barrier across the Mohawk and St. Lawrence basins, thus deflecting the drainage to the Mississippi. "That the lakes once discharged their...serves to add confirmation to the general opinion." For reasons previously assigned the Arkona beaches are very generally poorly denned and at times difficult...

...serving as the barrier across the Mohawk and St. Lawrence basins, thus deflecting the drainage to rhe Mississippi. "That the lakes once discharged their...serves to add confirmation to the general opinion." For reasons previously assigned the Arkona beaches are very generally poorly defined and at times difficult...

..."highlands" of the Hudson might also have interposed barriers to an outlet across the state of New York. A single communication only would then exist...serves to add confirmation to the general opinion. that elevatory movement, closed up the communication by way of the Mississippi valley a body of water...

..."highlands" of the Hudson might also have interposed bar riers to an outlet across the state of New York. A single communication only would then exist...the valley of the Mississippi. That the lakes once dis charged their waters in this direction, such additional evidence is furnished by the appearance...

..."highlands" of the Hudson might also have interposed barriers to an outlet across the state of New York. A single communication only would then exist...the valley of the Mississippi. That the lakes once dipcharged their waters in this direction, such additional evidence is furnished by the appearance...