(552 GEOLOCIY OF THE YELLOWSTONE NATIO>s'AL PARK. 



(lescvil )0(I. II( limes pointed nut the fact, since abundantly confirmed, of 

 the succession of forests that have l)eeu entombed one above another. His 

 section of Amethvst ^fountain shctws clearly this remarkable phenomenon. 



In ()ctol)er, 1874, Dr. ( )tt() Kuntze, a celebrated (rerman botanist, then 

 on a Ijntanical exjilorini;- jouriie\' around the world, visited the Park and 

 made .some iiiterestini;' observations on the process of petrifaction of trees 

 now s^'oino- on in the vicinitv of the g-eysers an<l Imt spring's. His pa})er 

 was not i)rinted, however, until liis return to (Termany in 188(i.^ 



The tlioroui;li exploitation of the Park was Tiegun and carried on for 

 several \ears bv the Yellowstone Park Division of the ])resent Geological 

 Survev. In 1883 the work was extended toward the northeastern portion 

 of the Park, and collections of greater or less extent were made at many 

 ])laces. In 1^8.') the Fossil Forest section was worked out, and large col- 

 lections were made by Mr. Arnold Hague, Mr. W. II. AVeed, I\li-. Ueorge M. 

 Wriglit, and Prof. J. P. Iddings. 



In the sununer of 1S87, Prof. Lester F. Ward and I spent about six 

 weeks in the viciuit\' of the Fossil Forest, making large collections of fossil 

 wood and leaf impressions. The exact localities are enumerated below. 



Tlie following season I spent two months in tli(_^ same area, discovering 

 many new Ijeds of plants ami more thoroughly exploring and collecting 

 from beds previously known. These are also recorded in the following list 

 of localities. 



LIST OF LOCALITIES AT WHICH FOSSIL PLANTS HAVE BEEN COLLECTED IN 

 THE YELLOWSTONE NATIONAL PARK. 



1871. 



Divide between the smuee of Suake River aud tlie soutlierii shore of Yellowstone 

 Lake; Haydeii survey. (Not sinee observed.) 



Near Yellowstoue Lake, ainoiiy basaltic rocks; Haydeii survey. (Not since 

 found.) 



1872. 



Yellowstone River below mouth of Elk Creek; A. C i'eale, Jusei)h ttavaye, 

 and O. 0. Sloaue. 



1878. 



Amethyst Mountain in vicinity of Fossil Forest; W. H. Holmes. 



I Das Aiislniid. ISSil, pp. UGl-oBi, 3iK)-39o, t)6.i-672, 084-(38i1. 



