OF THE NORTHWESTERN STATES. 



13 



Artesian Well, Toledo, Ohio. 

 Near lake level. (Dr. J. B. Trembly.) 



1. Yellow clay . . . . • • . 20 feet 



2. Blue clay . . . . . • • . 80 " 



3. Blue clay with small boulders, in which a flow of water was obtained 



to upper Silurian limerock . . . • . 15 " 



115 " 



Detroit, Michigan, Artesian Well, corner op Fort and Wayne Streets. 

 36:\ feet above river level. (A. E. Hatuan, Esa.) 



1. Soil . . . . . . . • 10 feet. 



2. Yellowish marly clay . . . . . . 118 " 



3. Beach sand with coarse gravel to upper Silurian limestone . 2 " 



130 " 



Oak Island, one of the Twelve Apostles Groitp, West End of Lake Superior. 

 Summit 300 feet above lake level. 



1. Coarse boulders ..... 



2. Coarse stratified yellow sand 



3. Alternations of red clay with layers of small boulders 



4. Coarse sand, red and gray .... 



5. Alternate bands of red clay and gray sand 



6. Red homogeneous laminated clay with a few pebbles and 



decayed leaves resting upon red Potsdam sandstone 



15 to 



20 feet. 



. 35 " 



40 " 



. 25 " 



25 " 



. 20 " 



20 " 



. 50 " 



15 " 



. 100 " 



150 " 



245 to 330 " 



Green Bay, Wisconsin, Artesian Well. 



A few feet above lake level. (Mr. A. Cuktis.) 



(Cedar log 50 feet from surface.) 



1. Red clay . 



2. Quicksand filled with water 



3. Compact hardpan . 



4. Red clay 



5. Hardpan 



6. Red clay . 



7. Hardpan 



8. Red clay to surface of Trenton limestone 



72 feet. 

 3 " 

 6 " 

 1 

 4 

 1 



foot, 

 feet, 

 foot 



20 feet. 

 107i " 



Specimens of Buried Timber from the Superficial Materials of the Northwest. 



1st. Ross County, Ohio. — Apparently cedar mineralized by sulphide of iron, 

 black, brittle, gives the odor of rotten wood when burned, leaving iron rust and 

 ashes. From a well in clay 30 feet deep, 150 to 200 feet above the Sciota river, 

 about 1,000 feet above ocean level. (From Col. Madeira.) 



2d. Coventry, Summit County, Ohio. — Resembles Osage orange, hard, well pre- 

 served, and natural; color dark brown, 42 feet beneath the surface in a well, 544 

 feet above Lake Erie. (From Dr. Neice.) 



3d. Dover, Cuyahoga County, Ohio. — Apparently cedar, fine grained, partially 

 rotted, not mineralized, among several other sticks more or less rotted, and frag- 



