2 University of Michigan 



of the lake. Certain habitats have been entirely missing, 

 notably low grassy meads and open upland woods. Such hab- 

 itats are found, however, farther inland. As a matter of fact, 

 the whole of the northern shores of Lake Michigan are of a 

 singularly monotonous character. 



Collecting was done in Schoolcraft County in 19 17, from 

 Pt. aux Barques, about twelve miles south of Manistique, to 

 the eastern boundary of the county at Hughes Point. The 

 shore over this stretch is generally sandy, the sandy beach 

 being broken at intervals by rocky points. Back of the beach 

 there are ridges of sand dunes, rising at some places to con- 

 siderable heights, covered largely with a scattering growth of 

 scrubby birch and poplar. At Pt. aux Barques a hardwood 

 ridge approaches closely to the shore, and along the Manis- 

 tique River there are some patches of hardwoods. 



Collecting in Mackinac County has covered the entire shore 

 from Hughes Point to Les Cheneaux Islands, and the years 

 19 18 to 1 92 1, inclusive. There is much less sand beach along 

 this portion of the shore, the beach being rather flat and rocky 

 with short stretches of sand. Back of the beach the country 

 is low and flat, covered with a dense growth of balsam, spruce, 

 and cedar, intermixed with some scattering birch and poplar. 

 The greater part of the collecting was done near Naubinway, 

 around St. Ignace, and in St. ^Martin Bay. 



In Cheboygan County only two or three days were spent 

 along the beach in the immediate vicinity of Cheboygan. In 

 Emmet County the collecting was confined to the beach from 

 Mackinaw City to Waugoshance Island. The beach here is 

 generally sandy, followed by ridges of sand, between which are 

 Avet swamps. 



The only collecting in Charlevoix County was on the islands 

 known as the Beaver Island group. These islands, lying in 

 the northern end of Lake Michigan, twelve to twenty miles 



