E. MINERALOGY AND GEOLOGY. 12 5 



YELLOWSTONE PARK. 



A preliminary report upon the hot springs, geysers, and 

 mud springs of the Yellowstone and Fire Hole Rivers has 

 been presented by Dr. Hayden in the February and March 

 numbers of the American Journal of Science, in which are 

 reproduced quite a number of the illustrations prepared for 

 his official report, which will probably appear before long. 



The interest attaching to this wonderful region, first visit- 

 ed in 1870 by Governor Langford, Lieutenant Doane, and 

 others, and then more thoroughly explored in 1871 by Dr. 

 Hayden and General Barlow T , has been intensified by the 

 publication of a popular article on the subject in Scribner' , s 

 Monthly. The prompt passage of a law by Congress, reserv- 

 ing this tract for a national park about sixty by fifty miles 

 in extent, and embracing all the principal geysers, mud 

 springs, etc., is a subject for congratulation, as, under the di- 

 rection of the Secretary of the Interior, there is no doubt that 

 such regulations will be established as will secure to the peo- 

 ple of the country the right of free access to these wonders 

 of nature, unrestricted by such charges and exactions as now 

 render Niagara Falls a by-word and reproach. 



SECOND REPORT OF THE GEOLOGICAL SURVEY OF INDIANA 



FOR 1870. 



The second report of the Geological Survey of Indiana, 

 made during the year 1870, under the direction of E. T. Cox, 

 State Geologist, has just made its appearance, and, like its 

 predecessor, appears to be a work of much scientific value. 

 In addition to the series of reports upon the geology of the 

 counties, it embraces a paper upon the Western coal measures 

 and Indiana coal, and a paper upon pala30zoic zoology, and 

 closes with an extended manual of the botany of Jefterson 

 County, Indiana, prepared by Professor A. H.Young, of Han- 

 over College. In this the total number of indigenous species 

 is given at 537, those introduced numbering 72. 



REPORT OF THE GEOLOGICAL SURVEY OF OHIO FOR 1870. 



The report of progress for 1870 of the Geological Survey 

 of Ohio, under the direction of Professor J. S. New T berry, has 

 just been published at Columbus, forming a volume of nearly 



