Rummaging in my grandfather’s attic last weekend, I found an old trunk (that apparently had belonged to HIS grandfather) marked “Science Expedition – 1861”. Inside, along with a wild assortment of outdated (and rather questionable) scientific instruments, was a selection of notes and illustrations, most of which had disintegrated with age. This diagram, showing the strata of the earth, was the only surviving document of their expedition.

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