Association of American Greologists and Naturalists. 149 
Permit me here to add as a claim of the western geologists, rather 
strangely overlooked by some eastern writers on western geology,—that 
besides these all the other western rocks yet made known, have been 
described by western geologists. Especially the bed of mountain or 
carboniferous limestone, superimposed on the cliff at the upper rapids 
of Mississippi, underlying the great Illinois coal basin, cropping out at St. 
Louis, and forming the bluffs at and above Alton, Illinois, with its char- 
acteristic fossil, the Archimedes of Le Seuer, was we own to Messrs. 
Troost, Owen and myself. The same rock occu in the limits of 
the survey of the Professors Rogers, who belong, in part at least, to the 
western corps. In 1839, I had the pleasure of comparing notes with 
Prof. Janes Rogers, on the characters of this very rock as it occurs in 
Indiana and Illinois on the one part, and in Western Virginia on the 
other. I hope yet more specifically to settle the claims of the various 
laborers in our western geology. At the same time I would observe 
that it is impossible for an eastern geologist, without visiting the west, 
or even by a post-haste journey over the trans-Appalachian world, to 
write upon its geology without committing errors injurious to his own 
reputation, the publication of which, he would of course, gladly recall. 
‘Remarks were offered and facts stated on the above subject by 
Dr. King, Mr. Haldeman, Mr. Teschemacher, Prof. Henry 
D. Rogers, Dr. C. T. Jackson, Prof. Vanuxem, Prof. Hitch- 
cock, Prof. Beck, and Dr. Dana. 
Mr. Haldeman laid on the table, at the request of Dr. Morton, 
some copies of a work on cretaceous fossils, bringing our know- 
ledge of this subject near the present diy. most of these "7 ed 
from the researches of Prof. Nicollet. 
A letter was read from Prof. Park of Philadelphia, regretting | 
his inability to attend the present meeting. 'The Association ad- 
journed to— 
Tuesday, April 26th, 9 o'clock, A. M.—Prof. Locke in the 
chair. The committee on the constitution and by-laws was call- 
ed upon for report. Dr. Jackson read the rules, as submitted by 
this committee. 
Constitution and By-Laws of the Association of American Geologists 
and Naturalists.* 
Arr. I. The Society shall be called “‘ Tue Association or Ament- 
can Grotocists anp NaturaLists.’ 
ae 2 ae ome ce ng ‘ ee | ag <r a | > ose 
of Wednesday, t them h they embrace all 
the rules which were Sea 3 on Peay and nates to avoid reaiabsione 
