• Transcribe
  • Translate

Coal Measures and Coal Mining in Iowa, including paleontology and a discussion on the coal formation; also the methods of mining by Russell T. Hartman, 1898

Coal Measures and Coal Mining in Iowa by Russell T. Hartman, 1898, Page 225

More information
  • digital collection
  • archival collection guide
  • transcription tips
 
Saving...
Plate VII. 1.a,b,c Productus nebrascensis 84 2. a,b Productus longispinus 86 3. a,b Productus muricatus 94 4. Productus cora 88 5 Productus symmetricus 91 6. a,b Productus semireticulatus 90
 
Scholarship at Iowa