26 



LIFE OF THE PLEISTOCENE 



station 4 (Plate I) . 

 885 feet north of Foster avenue. 587 feet 7 in. A.T.; 5 feet 7 in. A. L. M. 



Strata 



Deposit 



Depth 



Remarks 



XVI 



XV 



XIV 



XIII 



XII 



XI 



X 



IX 



VIII 



VII 



VI 



V 



IV 



III 



II 



I 



Surface soil, silt and loam 



Silt, sandy 



Sand, fine gray 



Silt 



Potamogeton layer 



Silt 



Silt 



Potamogeton layer 



Silt 



Chara layer, carbonaceous 



Silt 



Sand 



Silt, Treaty 



Silt 



Sand end gravel 



Boulder clay 



Total thickness.. 



17 



10 

 l 



i 



TIT 



42 



4 



m 



14 

 19 



8+ 

 + 

 + 

 + 



122 



Crushed shells. 



In the lower part this stratum con- 

 sist of layers of silt Vi or % 

 inches thick, separated by thin 

 layers of sand. Life is rare in 

 these layers. 



Anodonta and fish remains. 

 Water level in canal. 

 Unio bed. 



Elliptio crassidens 



" gibbosus 

 Rottmdaria tuberculata 



BIOLOGICAL REMAINS 



Stratum V 



Crenodonta undulata 

 " peruviana 



Pleurobema coccinemn magnalaciistris 



Stratum VII 



(Plants) 



Pkea tnariana Chara sp. 



Querais sp. Carex sp. 



Animals (Invertebrates) 



Elliptio gibbosus Amnicola limosa 



Anodonta grandis footiana " lustrica 



Sphaerium sulcatum " emarginata 



" flavum Somatogyrus subglobosus 



Pisidium nrginicutn Physa warreniana 



" compressum " Integra 



" variabile Planorbis antrosus 



" politum " campamilatus 



