/// Mfuioriatn — Walter A}igJis Dun. 59 



"A Brief Sketch of Floods in the Ohio River."" A^ol. 7, jj. 

 104. 



"Ancient Earthworks in the State of Ohio on the Little Miami 

 River." Vol. 7, p. ^i. 



"Exploration of Deer Creek Mound." Vol. 7, p. 194. 



"Swiss Lake Dwellers." Vol. 7, p. 87. 



"Report and Observations on Relic Finds." Vol. 8, p. 85. 



" Petrified Human Bones found in a Mound near Fort Hill." 

 A^ol. 8, p. 176. 



"Observations on Periodical Cicada. " Vol. 8, p. 233. 



" Report on Mound Ex|)lorations in Green County, Ohio." 

 Vol. 8, p. 231. 



Besides these published papers, he has given many valuable 

 contributions to the Society in the way of informal talks and lec- 

 tures. Three of the latter were given in the Free Lecture Course 

 on the following tO|:)ics : 



"The Scientific Value of Arctic Explorations."' 



" On the Zuni Lidians and their Civilization." 



"Climate, Plant Life and Consumption." 



There was no department of the Society which did not feel 

 the stimulus of his energy and ]:)erseverance; his spirit pervaded 

 all, and its influence will long be felt though he has been removed 

 from the midst of the work. 



The discovery of natural gas opened a new field for scientific 

 inquiry, and Dr. Dun entered upon it, giving special attention to 

 the possibility of finding gas in the vicinity of Cincinnati, and to 

 the solution of the problem regarding the position and character 

 of the Utici and Trenton formations in this vicinity. The data for 

 for this work were obtained largely from the records of well bor- 

 ings in Cincinnati and vicinity, and much laborious work and care 

 were necessary in obtaining them. The writer assisted in this 

 work, and can speak from personal knoweledge of the conscien- 

 tious care exercised by the Doctor in collecting his materials. 



The results of this investigation were given to the society in 

 the address given at the close of his term of ofiice as president, 

 though at that time they were necessarially incomplete, and it is to 

 be regretted that these results were not prepared in a form for pub- 

 lication. 



Of the value of his work in this connection. Professor Orton, 

 the State Geologist, writes : "Dr. Dun wrote two long letters to me 

 in regard to the stratigraphy of the Cincinnati rocks as determined 



