70 Life of David Dale Owen^ M. D. 
ing Dr. Owen with the entire detail. Considerable saving was 
made by inviting competition in the various departments of 
printing, lithographing, engraving on steel and wood. In this 
report of 638 quarto pages, besides the numerous maps, dia- 
grams, &c., many of the illustrations are from the original 
drawings of Dr. Owen, who had great facility in sketching. 
The wood-cuts in the body of the work, and some diagrams 
are from sketches made by his brother. Prof. Richard Owen, 
who accompanied Dr. Norwood in the survey of the north shore 
of lake Superior in 1849, taking also the barometrical and 
thermometrical observations. The other assistants in this 
N. W. survey were Drs. Shumard and Litton of St. Louis, Col. 
C. Whittlesey of Cleveland, 0., Drs. John Evans and B. F. 
Meek of Washington, Messrs. B. C. Macy, Henry Pratton, 
George Warren and John Beale of New Harmony. Dr. Leidy 
of Philadelphia, described the mammalian and some other 
fossils. In the publication of this work Dr. Owen, for the 
first time, brought the medal-ruling style of engraving to bear 
on fossil specimens. Besides Ammonites and other figures, 
the large Inoceramus from Nebraska, medal-ruled on steel 
from the original specimen, is a magnificent illustration of the 
excellence of that style, thus applied. 
5. In April 1854 Dr. D. D. Owen was selected by governor 
Powell, of Kentucky, as state geologist and continued to occu- 
py that position for five years. He published the results of 
this survey from time to time, finally completing four large 
8vo volumes, with maps and illustrations, the last volume 
embracing over 600 pages. In this survey and subsequently 
in that of Arkansas,Mr. E. T. Cox then of New Harmony and 
now of New York, was Dr. Owen's principal assistant. The 
chemical work and report were made by Dr. Robt. Peter of 
Lexington, Ky. 
6. In October 1857, when nearing the completion of his 
Kentucky survey, Dr. Owen accepted the position of state 
geologist of Arkansas, tendered him by governor Conway. 
This gentleman afforded Dr. Owen every facility, and between 
them there always existed the most cordial good feeling. In 
1860 the civil war already threatened, and postal communica- 
tion between the north and south was considerably interrupted, 
when the work for the second volume of the Arkansas report 
had been about completed and Dr. Owen had died ; but gov- 
