NORTH AMERICAN PALEONTOLOGY. 263 



Meyer, Otto— Coutiuued. 



the Marine Tertiary was deposited upon them. (3) The Grand Gulf for- 

 mation, at least for its main part, is not a marine formation ; it contains 

 fresh water shells. (4) A thick and extended marine greensand formation 

 with a numerous fauna is found iu eastern Mississippi. It is parallel to 

 the strata immediately below the Claiborne profile. Its fauna is C'laiborn- 

 ian, but approaches the Jacksonian. 



Meyer, Otto. Observations on the Tertiary and Grand Gulf strata 



of Mississippi. ( Amer. Kat., vol. xx, p. 969, November, 1886. Phila- 

 delphia.) 



Abstract of. 



Meyer, Otto. Observations on the Tertiary and Grand Gulf strata of 

 Mississippi. (Nature, vol.xxxiv, p.330, 1886. Loudon and New York.) 



Notice of. See American Journal of Science, July. 



Meyer, Otto. Notes on the variation of certain Tertiary Fossils in 

 overlying beds. (Amer. Nat., vol. xx, pp. 637, 638, July, 1886. Phila- 

 delphia.) 



Describes variations in Ciitherca sohrhia Conrad, and Fious mississipjriensis Con- 

 rad, from the prolile near Vicksbnrg. 



Mixer, Fred K., and Herbert Upham Williams. Fish remains 

 from the Coruiferous near Buffalo. (Bull. Buffalo Soc. Nat. Sci., vol. 

 V, p. 84, 1886. Buffalo.) 



Reports the discovery of a number of imperfectly preserved lish remains in 

 strata of the Corniferous period, near Buffalo. 



Moore, David R. Fossil Corals of Franklin County, Indiana. (Bull. 

 Brookville Soc. Nat. Hist., No. 2, pp. 50, 51, 1886, Richmond, Ind.) 

 Gives lists of fossil-corals occuring in Upper and Lower Silurian, and in the 

 Devonian drift of Franklin County, Indiana. 



Moore, David R. Two hours among the Fossils of Franklin County, 

 Indiana. (Bull. Brookville Soc. Nat. Hist., No. 1, pp. 44-45, 1885. 

 Richmond, Indiana.) 



Gives a list of Lower Silurian fossils found during a two hours' walk. 



Morris, Charles. Methods of Defense in Organisms. (Proc. Acad. 

 Nat. Sci., vol. -, pp. 25-29, March, 1886. Philadelphia.) 



Throughout the whole history of the organic realm one principle holds good. 

 There has been a continued evolntion of more rapid and varied powers of 

 motion. To this every advance in organization has tended, while the hin- 

 derances to speed and flexibility have been successively discarded by the 

 higher forms of life. In correspondence with this has been the develop- 

 ment of mentality, since mentality, as outwardly displayed by the ani- 

 mals below man, is indicated by a greater intricacy of motions, in combi- 

 nation with ambush and concealment. For the attainment of the highest 

 Ijossible speed and strength little mentality was requisite, and brain de- 

 velopment is manifested rather by intricacy than speed of motion — or rather 

 by that well-ordered correlation of rest and diversified motion suited to 

 the best good of the organism. Yet we must regard mentality as rather 

 the effect than the cause of motor evolution. Probably the power of di- 

 versified motion appeared first while the exercise of any new power of this 

 kind acted as an agent iu the development of the brain. In other words, 

 the evolution of the brain is a consequence of that of the body — not the 

 reverse. P. "29. 



