XOETII AMERICAN PALEONTOLOGY. 263 



Meyer, Otto — Coutiuued. 



the Marine Tertiaiy was deposited upon them. (3) The Grand Gulffor- 

 luatiou, at least for its main part, is uot a marine formatiou ; it contains 

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

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

 the strata immediately below the Claiborne protile. Its fauna is Claiborn- 

 ian, but approaches the Jacksouian. 



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

 of Mississippi. ( Aiuer. N^at., vol. xx, p. 969, November, 188G. Phila- 

 delphia.) 



Abstract of. 



Meyer, Otto. Observations ou the Tertiary and Gi"and 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 Ci/tlierea sohrina Conrad, and Ficiis mississippioisis Con- 

 rad, from the prolile near Vicksburg. 



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 fish remains in 

 strata of the Cornifcrous 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 Upjier 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 evolution 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 

 possible 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 juentality 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 in 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. 



