96 GEOLOGICAL REPORT. "HI 



Of these materials, the only specimen 1 have as yet analyzed. 

 was taken from the bluff at Waverley, Lowndes county, just tinder 

 Col. Young's warehouse. — A greenish gray, micaceous, soft, ^andy 

 mas<. with few fossils, forming- steep bluffs. 



s.WI) PKOM WAVERLEY BLUFF. 



Micaceous Sand 8«.702 



Potash 0.204 



Soda 0.190 



Lime L.351 



Magnesia 0.72;: 



Peroxide of Iron, and Alumina 5.598 



Phosphoric Acid 0.328 



Sulphuric Acid 0.01."> 



Carbonic Acid 0.472 



Water 2.308 



99.88 1 



Tiii' small amount of nutritive ingredients contained in this mass, 

 would not pay for the cost of hauling out, on the large scale, unlcs- 

 it were very conveniently at hand, and the sand were needed as a 

 mechanical manure. The amount of phosphoric acid shown by this 

 analysis is nevertheless as large as is usually found in the marls of 

 Mississippi. 



The sand of the Columbus bluff is poorer, probably, than that of 

 Waverley; but in many points (e. g. at Plymouth Bluff) the materials 

 are sufficiently rich in lime to deserve the earnest attention of 

 agriculturists. The region has not as yet been examined specially 

 enough in this point of view. 



141. Mails of the Rotten Limestone Grouj?. — 1 regret having 

 been unable, as yet, to bestow more special attention on the white 

 and gray clay marls of Tishomingo and adjoining portions of 

 Pontotoc and Itawamba. Those of Breuton's contract (*fl 18), 

 Parmeechce (1118), Tishomingo and Yoonaby Creeks, and others 

 of N. E. Pontotoc, appear to assimilate more nearly in their 

 character to the Houston marl than to the Rotten Limestone 

 proper. An analysis of the latter will be given below ; that of 

 the marl dug from cisterns at Houston, Chickasaw county — a 

 bluish gray mass, quite hard when dry, but somewhat plastic when 

 wet — gave the following result : 



