Report upon stream pollution in Ohio / by Allen Hazen -- Report on the chemical examination of the waters of the Scioto, Olentangy and Mahoning rivers / by N.W. Lord -- Report on the bacteriological examination of the waters of the Scioto, Olentangy and Mahoning rivers / by A.M. Bleile -- Report on stream guagings and sources of pollution of the Scioto, Olentangy and Mahoning rivers / by C.N. Brown -- The rock waters and flowing wells of Ohio / by Edward Orton