Miscellanies: 108. 
junior editor, of Sept. 6th, Prof. Bailey remarks; “I have given to the 
‘prairie chalk’ which you sent me, from the Upper Mississippi, a some- 
what hasty examination; but I found it, as I ventured to predict, full 
of the ‘ elegantly little.’ It is indeed richer in the beautiful forms of 
the polythalmia than any American specimen I have yet seen, and 
many of the forms are entirely different from those of New Jersey, Al- 
abama, and Upper Missouri. The following are rude outlines of some 
of the most common Bormy sketched hastily with camera lucida and 
besarte 
“The seals Paeueuth 1s ‘cieees magnifie 
‘In some of the cells are aoe (see fig. 2.) Tom ignorant & thee 
nature, whether ova or animalcules I cannot decide. I cannot make- 
out the nature of the large brown fragments in the same specimen, nor 
of the fragment sent in the little box, and which you compared to ver- 
tebre of fish with the spines broken off—they are all evidently of animal 
origin.” 
Prof. Bailey has also found very interesting forms of vibe thahnis 3 in 
the specimens brought by Mr. J. N. ‘Nicollet from the ‘ far west;’ it 
will be remembered that in our last muber, ye published under the 
proceedings of the associated geologists a at Philadelphia, an interesting 
narrative of this gentleman, giving an account of his important obser- 
vations in that region. We had hoped to insert in the present number, 
Some more extended notice of these matters, showing i in what an inter- 
esting and unexpected manner the observations of Prof. Bailey on the 
limestones of Alabama, and the localities above named, had connected 
themselves with similar observations by Prof. Ehrenberg. 
Mr. Thos. Weaver has published. (L. E. and D. Phil. Mag. for May, 
June, 1841,) a paper on the organic bodies composing the chalk and 
chalk marl, as drawn from observations of Dr. Ehrenberg, with some 
notice of the researches of M. D’Orbigny ;, a condensed abstract of this 
intresting, memoir was prepared for our present 
crowded state of our pages ee, its postponeme 
Vol. x11, No. 2.—July-Sept. 1841 —s 
