The National geographic magazine . Q^>. ^^ JoA/i B-7dr6 erC. Figure 3.—Sandusky and Vicinity 4-02 The National Geographic Magazine ba}- is nearly level, so that soundingsgiving the depth of the water do notdisclose any valleys. By testing thebottom at numerous points along linestransverse to the general course of thestream, it was found that off the mouthof each stream was soft mud containingorganic matter and readily distinguishedfrom the glacial drift on either side. Ithad been thought that the glacial claymight be softened by being covered b}~water so long, but experience showed Figure i
The National geographic magazine . Q^>. ^^ JoA/i B-7dr6 erC. Figure 3.—Sandusky and Vicinity 4-02 The National Geographic Magazine ba}- is nearly level, so that soundingsgiving the depth of the water do notdisclose any valleys. By testing thebottom at numerous points along linestransverse to the general course of thestream, it was found that off the mouthof each stream was soft mud containingorganic matter and readily distinguishedfrom the glacial drift on either side. Ithad been thought that the glacial claymight be softened by being covered b}~water so long, but experience showed Figure i shows a cross-section of thevalley of Mills Creek, three-eighths ofa mile out from the present mouth. Figure 2 shows the depth in feet toclay in the part of Sandusky Bay ex-tending north from the mouth of MillsCreek a distance of 2 miles. To avoidcrowding, some of the numbers havebeen omitted. Along line A were made41 holes 8 rods apart. Excepting nearthe western end, the}* show the clay tobe everywhere 6 to 8 feet below the sur- KALEV
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectgeography, bookyear18
