VTt GEOLOGIST. 127 



rtrped and mottled with red, or even of a uniformly brick red 

 •olor. It varies equally in bardnci imea suffi- 



s and bailding atones. The Stato 



1 this. The material for 



the c .....;. i [onia was also derived from the same 



source. 

 Tliis rock embraces numerous comminuted remains of v< 



tion, and some well preserved stems of Calamilcs and Lqndo- 

 dendr 



Although I I ..lately of the Parma Sandstone, 



the C . the Woodvillo \ ae, there is no 



iy to one geological epoch, and 

 itute what, iii a d ase, may be designated 



ti b. r J"liis remark, however. 'hat more 



applicable to the Woodville than the Parma Sandstone. 



18. — Supci-Jicial Materials. 



No tra s have yet been discovered in the Lower Peninsula, 

 of any of the geological formations intervening between the 

 Goal Measures and the Boulder Drift. Drill materials aro 

 strew. Iy the entire sui face, and constitute a very 



•erious ol of the investigation of our geology. 



A large number of facts and observations is on hand as data 

 tor th bis formation, but it will be necessary to 



content with a few general remarks. 



Num the movement of heavy bodies 



over the underlying rucks, previously to their burial by the 

 Drift. Wherever considerable surfaces arc found exposed, they 

 are seen smoothed and striated in the manner usually attributed 

 to drift agency. The most remarkable examples are Been upon 

 the Ileldcrberg limestone at Brest, Stony Pt, and Pt. aui Peaui 

 At Stony Pt., the surface of the limestone has been denuded 



• I, over an area of Sev( 

 Th- \ >oth and floor-liki 



with a set of ning \n perfectly parallel lines N. ( 0" \Y. 



Ono d is seen belonging to this II : T 



