What you want to look at here are the two wooden frames with fuel tanks and motors attached; the one in front is labeled RM Wade & Company. These are drag saws, which came after the hand-operated cross-cut saw but before the chainsaw. They consist of a two-stroke engine attached to a cross-cut saw blade. The one in back has a blade on it; the one in front does not. The blade on a drag saw could be oriented to fell standing trees or cut downed trees into shorter pieces. It’s a clever design, and as hard as it must have been to haul these things into the forest, it had to have been much easier than sawing by hand. To see one in action, search for “drag saw” on YouTube or click the link to this video.