Reviews — American Geological Surveys, Michigan. 275 



Further on, the publications of the Survey are enumerated, and 

 the alteration of the issue of the " Palasontologia Indica " from 

 quarterly to annual parts is mentioned, the latter appearing to be 

 the most advantageous form in which to send them forth. The 

 Eeport concludes with notices of the additions to the Library and 

 Meteorological Collection, the progress in cataloguing the Museum 

 specimens and analyzing coals, the usual list of Societies and other 

 institutions from, which publications have been received being ap- 

 pended. 



The remaining pa,pers in this number of the " Eecord " are two : 

 one on the alleged Discovery of Coal near Gooty, and of the indica- 

 tions of Coal in the Cuddapah District, by E. Bruce Foot, Esq., 

 F.Gr.S., in which the first discovery above alluded to is more fully 

 treated of, and another noticed ; the dribblings from the guano of 

 bats and birds issuing from cavities in. recent travertin having been 



mistaken for petroleum by a certain Dr. H , whose statements 



led to Mr. Foot's investigations, and whose name we charitably sup- 

 press, as his alleged discoveries can confer on him no credit according 

 to this paper. The other is a sketchy but interesting record of the 

 Mineral Statistics of Kuamon Division, etc., by A. W. Lawder, Esq., 

 C.E., Divisional Engineer. 



IL— AMERICAN GEOLOGICAL SURVEYS. 



{^Continued from page 225.) 



1. — Eepobt on the Progress of the State Geological Survey 

 OF Michigan. Presented November 22, 1870. By Alexander 

 WiNOHELL, LL.D., Director. 



THE Government appropriate 8000 dols. annually for the Geo- 

 logical Survey of Michigan. Half of it is applied to the in- 

 vestigation of the rocks of the Northern Peninsula. Field-work, has 

 been carried on for two years. The assistants are Major T. B. Brooks 

 and Professor E. Pumpelly. The sub-assistants are Professors N. H. 

 Winchell, M. W. Harrington, and E. A. Strong ; A. S. Wadsworth, G. 

 B. Headley, A. 0. Currier, J. H. Emerton, J. N. Armstrong, C. M. 

 Boss, S. W. Walker, A. E. Marvin, and L. G. Emerson, This 

 pamphlet briefly sets forth the progress of the work, and the plan 

 of the Final Eeport, much of the material for which is already in 

 hand. Attention is paid to the Geography, Hydrography, Topo- 

 graphy, Climatology, Magnetography, Vegetation, Sanitary Cha- 

 racteristics, Statistics of Population and Improvements, Fruit Pro- 

 duction, and Agriculture of the State, as well as its Geology, the 

 latter claiming the lion's share. 



The Survey of the Iron region near Marquette is nearly completed. 

 Eleven large maps of the most important mines are nearly ready for 

 the engraver. Discoveries have been made of new and large beds 

 of iron ore in the forest unsettled country, upon lands owned by the 

 State. The older beds belong to the Huronian system, several 

 thousand feet thick. All the rocks appear to have been of sedi- 



