THE MIAMI SERIES OF SOILS. 5 



lows an irregular course to the north as far as the northern boundary 

 of Gladwin County, thus extending around the shore line of Saginaw 

 Bay at a distance varying from 25 to 50 miles inland. 



From the southwestern corner of Ogemaw County, Mich., the: 

 boundary of the area within which the soils of the Miami series are 

 chiefly developed extends soutlrwestward to the vicinity of Newaygo, 

 Mich., and thence southerly near the shore of Lake Michigan to St. 

 Joseph. It will thus be seen that a large total area in the southern 

 part of the lower peninsula of Michigan is occupied by the soils of 

 this series, although soils of the Coloma and other series derived 

 from the glacial outwash are closely associated with the soils of the 

 Miami series, and that in some localities, as along the southern 

 boundary of Michigan between Hillsdale and Three Rivers and 

 thence northward to Kalamazoo, the soils of the Miami series occupy 

 only a small part of the territory. 



A disconnected area of soils of the Miami series is also encountered 

 in the Traverse Bay region. It occurs as a narrow belt of elevated 

 land along the eastern shore of Lake Michigan, extending from the 

 vicinity of Manistee to Traverse City, Mich., and as a broader belt 

 between Great Traverse and Little Traverse Bays. 



In eastern Wisconsin the western boundary of the area dominated 

 by soils of the Miami series extends from the immediate vicinity of 

 Beloit northwestward through Madison and thence northward to the 

 vicinity of Portage, Wis. Thence it extends irregularly northeast- 

 ward to a point west of Oshkosh. Nearly all of the territory lying 

 between this line and the western shore of Lake Michigan is occupied 

 by the soils of the Miami series, although large areas of other im- 

 portant soils are intimately associated with them. This section is 

 separated from a more northern area of Miami soils by the glacial 

 lake deposits and by other soils of glacial origin covering a consider- 

 able area in the lowlands which surround the southern end of Green 

 Bay, and extend south and west of Winnebago Lake. 



While the regions as outlined contain all of the larger areas of 

 soils of the Miami series which have been mapped in the progress 

 of soil-survey work, it is probable that small local areas of the soils 

 of this series may be encountered to the west of the territory indi- 

 cated. There is little possibility of any extensive areas occurring 

 in more southern and eastern localities. It should be held in mind 

 that a wide variety of other soils of different origin and of different 

 characteristics is associated with the soils of the Miami series within 

 the area where these soils constitute the most extensive types, and 

 the most important in agriculture. The detailed soil surveys of the 

 individual county areas only can show the relative extent of the 

 Miami and other soils and their intricate geographical distribution. 



