DETAILED ACCOUNT OF SOME RECENT EXPERIMENTS. 65 



40 — 60 ft. grey sandy silt. 



60— 70 „ fine sand. 



70 — 80 ,, yellowish sand. 



80 — 85 ft. fine grey sand. 



85 — 100 „ brown earth, 



joo — ,, yellow sand. 



— '75 ii coarse grit and sand, 



175 — 190 „ coarse grit. 



190 — 210 ,, fine gravel. 



210 — 238 „ gravel ranging to £ inch in diameter. 



No. 5. Steel Brothers & Co. Middle mill. Section- 



o — 8s ft. grey clayey silt. 



8S — 99 1) fine sand. 



99—100 „ grey sandy silt. 

 100— 118 „ fine grey sand. 

 118 — 122 ,, grey sand with yellowish grains, 

 122-130 „ fine grey silt. 



130 — 14S ft. clean sand. 

 145 -15° ;• coarse grit with some fragments ranging to i inch 



in diameter. 

 "50—I5S n grey silt. 



155-160 „ coarse sand mixed with small ferruginous concretions 

 160 — 176 ,, fine clean sand. 

 176 — 180 „ fine reddish sand. 

 180—190 „ coarse sand. 

 190 — 195 11 medium grained yellow sand. 

 195—198 „ grit. 



198 — 203 „ coarse grit with some larger fragments, 

 203 — 229 „ gravel ranging to k inch. 



No. 6. Kruger & Co. 



Section lost. At about 250 feet a large number of shells in a very 

 good state of preservation and in some cases quite fresh looking 

 were brought up. The forms are all marine littoral, comprising the 

 genera Cardium, Area, Venus, Solen, besides fragments of polyzoa, 

 The species appear to be living ones, 



( 65 ) 



