50 JOURNAL OF THE 



Shaler, N. S. — Oyi the Geology of the Cambrian District of Bristol 

 Co., Mass. Bull. Mas. Comp. Zool. XVI., pp. 24-26. 



Davis, W. M. — The Geological Dates of Origin of Certain Topo- 

 graphic T^ortns of the Atlantic Slope of the U. S. Bull. Geol. Soc. 

 America, II., pp. 548-581. 



Shaler, N. S. — Geology of Mount Desert Island. 8th An. Rept., 

 U. S. Geolog-ical Survey. 



nMcGee, W. J. — 7'hree Formations of the Middle Atlantic Slope. 

 Am. Jour. Sci. XXXV, 



DeGeer, Baron Gerard. — On Pleistocene Changes of Level in East- 

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AN EXAMINATION INTO THK NATURE OF 

 . PAL^OTROCHIS 



CHARLES HENRY WHITE. 



While Professor Ebenezer Emmons was "Geolog^ist 

 to North Carolina," he discovered a sing-ular form in 

 Montg'oniery county which he believed to be a fossil. 

 He announced the discovery in 1856, and owing" to the 

 low horizon in which he found it, reiJfarded it as the 

 o-dest representative of the animal kingdom on the 

 globe, and gave it the wd^jrw^ palccotrochis ; old mes- 

 seng-er. At this time he wrote a letter to one of the 

 editors of the American Journal of Science in which he 

 said: "It is evident that the fossil is a coral," and de- 

 scribed'it as follows: "Form lenticular-and circular and 

 similar to a double cone applied base to base; surfaces 

 grooved, grooves somewhat irregular but extended from 

 tne apices to the base or edge."^ 



In his Report of the Midland Counties of North 



1, American Journal of Science, Vol. XXII. 2nd Series, p 390. 



