IOWA ACADEMY OF SCIENCES. 127 



underlying- the drift, and resting, judging from an exposure of 

 that several rods away, upon chalk deposits. A more careful 

 examination may possibly reveal the characteristics of older 

 till in these deposits, but no yjebbles were noted where it 

 was studied. Reports from wells in the region seem to 

 corroborate the idea of a preglacial silt in that locality. 

 Turkey ridge is a high divide between the Vermillion and 

 James rivers, which became an interlobular portion of the 

 Altamont moraine. 



V. Recent Fossil. s from Near BracUey, Clark Coiotty, S. D. — In 

 1895 Miss Helen M. Buzzell, a teacher in the common schools, 

 became interested in some curious things found in digging 

 wells a few miles north of Bradley. I have not been able 

 to visit the locality and can only quote from her description: 

 " The land here is very rough, showing hills, little level places 

 and big sloughs, or old lake beds The well is about fifty rods 

 from the foot of a hill, which, I should think, is nearly 300 feet 

 high, at the head of a slough. The latter is hardly a ravine — 

 rather a hollow — and here are the figures as given by the man 

 w^ho dug the well, describing the different soils as they came: 



FEET. 



1. Black loam 3 



2. Crumbly .\ellow cla* 14 



3. White material 3 



4. Tree 9 



5. Blue clay 6 



"This is on Mr. J. D. Foley's place, section thirty-five. 

 Spring Valley township, six miles from Bradley; there are 

 others similar. " 



The white material is evidently a white marl. It contains 

 VaJvata fricarinafa, Phntorbis bic((rinati(s, P. parvus and Llriinea 

 huiiiiJis. Miss Buzzell sent numerous pieces of wood, most of 

 which I judged to be coniferous. They show the characteristic 

 tracheids and resemble tamarack. Specimens of muck. No. 4, 

 contain fresh water shells similar to those in No. 3, and also 

 Anadonta and Spcerium bulcatuni. The data are not sufficient 

 as it would seem for asserting that this deposit is inter- 

 glacial. It may result from the filling of a recent lake basin. 

 If such is the case, it resembles the locality north of Grand 

 View, in Douglas county, which was described in Bulletin No. 

 1, of the South Dakota Survey, page, 126. Both localities are 

 inside the Altamont moraine. 



