6 FLORA OF LOWER COAL MEASURES OP MISSOURI. 



material from Henry County, Missouri, comes from shales less than 100 

 feet above the "Ferruginous sandstone." 



The local stratigraphic details of the phytiferous shales at most of the 

 points from which plailt collections were made have already been fully 

 given in the State reports prepared by Broadhead and Winslow.^ The 

 plants from Owens's coal mine, Hobbs's mine, Deepwater, Pitcher's mine, 

 and the shales near Gilkerson's Ford of Grand RiA'-er are said to have come 

 from the roof of the same coal seam, most commonly known in that region 

 as the "Jordan coal."^ 



The local section at Kinnej^'s mine, which is but a few hundred feet 

 from Owens's mine, is given by Winslow in his Preliminary Report on the 

 Coal Deposits of Missouri.^ The same report also illustrates ^ the details of 

 the coal in the vicinity of D.eepwater, the section at the Blair Diamond No. 

 2 shaft being essentially the same as that at Hobbs's mine. The strati- 

 graphic conditions at the Stephens and Dunlap strippings, from which many 

 of the plants marked "Hobbs" are said to have come, and which are also 

 described in the report above referred to,'' are shown in a photograph, which, 

 through the courtesy of Dr. Jenney, I here reproduce as PL I. The section 

 of the coal and roof shales at the Pitcher mine is given in Mr. Van Ingen's 

 notes as follows : 



Section at U. 8. G. S. station No. 1263. 



Feet. Inches. 



4. Sandstones and intercalated shales 5 



3. Shales with plants 3 4 



2. Coal 2 6 



1. Fire clay. 



The fire clay grades below into shale, this into shaly sandstone, and 

 that into the "Spring River sandstone" of Dr. Jenne}-, or the " Ferruginous 

 sandstone." Probably the section given as the Pitcher shaft in Dr. Wins- 

 low's repoi't" was made from a point near by. The Jordan coal is described 

 in detail by Broadhead in his valuable re23ort for 1872,' which also illus- 



' Descriptive columnar sections of the Coal Measures of Missouri are given hy Prof. G. C. 

 Broadhead in Rept. Geol. Surv. Mo., 1872, Iron ores and coal fields, pt. 2, pp. 7, 82, 88; also Ann. Rept. 

 Geol. Surv. Mo., 1894, vol. viii (1895), pp. 360-369. 



- Ropt. Geol. Surv. Mo. , 1872, pt. 2, p. 16. 



3 Page 139, text fig. 97. 



< Page 141, text fig. 99. 



s Page 142. 



"Page 140, text fig. 98. 



' Rept. Geol. Surv. Mo., 1872 (1873), xit.2, p. 16. 



