This short novel from 1889 is mostly of historical interest as an early Steampunk-like story where machines take over the world. Although this is a sequel to "A Mexican Mystery" from 1888, which is an early example of machine intelligence, it can be read independently. (That is good because "A Mexican Mystery" is quite hard to find.)
It is easy to read, and parts of it are full of action, but it wouldn't satisfy most modern readers. (It could be updated into an interesting film or comic.) It isn't as badly dated as some early SF, and it even has a strong, independent female character. Still, it is lacking in details and any attempt at plausibility. It is never explained how the machines developed the ability to reproduce, nor how they are getting their supplies of coal. It goes very quickly from a few self-reproducing train engines, to thousands of machines of various types. We follow the inhabitants of one small town as they flee the machines. They pass through several large cities that have been completely abandoned in just a few days. No survivors and no corpses, just empty cities everywhere. They take a few ships from New Orleans through the Darien canal and settle in Honolulu. (Apparently the machines also killed everyone there and then left. The Darien canal doesn't really exist but was once a proposed canal through Central America.)
Brad D. Sibbersen did a good job editing this book and making it available. Many times when out-of-print and out-of-copyright works are made available these days as e-books, they are bursting at the seams with typos and poor formatting. This one is much better quality.