Read it through once

We move up the river--always through enchanting scenery, there being no other kind on the Upper Mississippi--and pass Moline, a center of vast manufacturing industries; and Clinton and Lyons, great lumber centers; and presently reach Dubuque, which is situated in a rich mineral region. The lead mines are very productive, and of wide extent. Dubuque has a great number of manufacturing establishments; among them a plow factory which has for customers all Christendom in general. At least so I was told by an agent of the concern who was on the boat. He said--