118 REPORT OF THE 



city of Jackson, but it would occupy too much space to detail 

 the results. It must here suffice to say in general terms, that 

 the statistics accumulated seem at first view to constitute a 

 perfectly chaotic mass, without the least trace of a fixed order 

 of succession among the strata, but that after Correcting the 

 errors in the mineralogical language of the well borers, it is 

 found that the different explorations have pierced the Wood- 

 ville Sandstone, the Coal Measures and the Parma Sandstone; 

 that these three formations present numerous sudden flexures, 

 so that after denudation of the ridges, each has been brought 

 to the surface at numerous points. The consequence is, that in 

 some cases the exploration has commenced in the Woodville 

 Sandstone, in others, in the Coal Measures, and in still others, 

 in the Parma Sandstone, which is shown to consist in the lower 

 part, of an alternation of quartzose and argillaceous beds. It 

 further appears that the Artesian waters of this vicinity pro- 

 ceed from the lower portion of the Parma Sandstone, and that 

 the trough shaped attitudes into which the rocks have been 

 thrown, are exceedingly favorable to the reception and reten- 

 tion of large quantities of water. In a full report upon our 

 geology, it will be interesting to exhibit the correspondence of 

 the results of the various explorations and to illustrate the 

 whole to the eye by appropriate diagrams. 



As the three localities already referred to as the seat of coal 

 mining operations are thought to be situated upon outliers 

 of the, great coal basin, so nothing more c*n at present be said 

 of the city of Jackson — the indications being, that rocks below 

 the coal measures occupy the surface to the north of the city. 



Between Ingham and Genesee counties the boundary of the 

 coal formation has not been traced. In the southwestern part 

 of the township of Mt. Morris and contiguous portions of 

 Flushing, in the latter county, according to the observations 

 of Dr. Miles, the shales and sandstones of the coal measures 

 make numerous outcrops. On the S. E. £ sec. 26, Flushing, 

 the following section is observed in the bank of the Flint 

 River: 



