IOWA ACADEMY OF SCIENCES. 



105 



THE DRIFT SECTION AND THE GLACIAL STRI^ 

 IN THE VICINITY OF LAMONI, IOWA. 



BY T. J. FITZPATRICK. 



Workmen digging a well at the elevator during April, 1896, 

 came to a forest bed at a depth of eighty-five feet below the 

 surface. Quite a number of pieces of wood were removed, one 

 being a branched log, eight inches in diameter and five or six 

 feet in length. Three pieces were secured by the writer and 

 microscopic sections made of the wood revealed the border 

 pits, characteristic of conifers. The materials passed through 

 above the forest bed were composed of yellowish and blue clay 

 charged with usually small pebbles. A 425-foot well drilled 

 by the city, two blocks north of the elevator, has left only an 

 obscure record. The only data of interest preserved were the 

 facts that the limerock was 200 feet below the surface, and the 

 materials passed through above were clay and gravel. 



In several other deep wells dug in the immediate vicinity 

 driftwood has been found at the same horizon as in the eleva- 

 tor well, and in all cases drift .material has been found below 

 the forest bed. 



S. B. Hartshorn, living five and a half miles southwest of 

 Lamoni, has a well 221 feet deep. He gives the following sec- 

 tion beginning at the surface : 



The section in several particulars wants authentification. 

 The driftwood at the depth of eighty-eight feet corresponds 



