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HERE followed a very long and untranslatable digression about the different races and families of the then existing machines. The writer attempted to support his theory by pointing out the similarities existing between many machines of a widely different character, which served to show descent from a common ancestor. He divided machines into their genera, subgenera, species, varieties, subvarieties, and so forth. He showed the existence of connecting links between machines that seemed to have very little in common, and showed that many more such links had existed which had now perished. He pointed out tendencies to reversion, and the presence of rudimentary organs which existed in many machines feebly developed and perfectly useless, yet serving to mark descent from an ancestor to whom the function was actually useful. I left the translation of this part of the treatise, which, by the way, was far longer than all that I have given here, for a later opportunity. Unfortunately, I left Erewhon before I could return to the subject; and though I saved my translation and other papers at the hazard of my life, I was obliged to sacrifice the original work. It went to my heart to do so; but I thus gained ten minutes of invaluable