Ferris Jabr’s NYT Magazine piece “The Mysterious, Deep-Dwelling Microbes That Sculpt Our Planet” (adapted from his book Becoming Earth: How Our Planet Came to Life; archived) blew my mind, as we used to say: I had no idea that “a majority of the planet’s microbes, perhaps more than 90 percent, may live deep underground” (though of course biology-oriented Hatters will have long been aware of it, and will probably pick holes in the article). I’m going to quote a couple of paragraphs; the final word is what prompts me to post:
Among all living creatures, the peculiar microbes that dwell deep within the planet’s crust today may most closely resemble some of the earliest single-celled organisms that ever existed. Collectively, these subsurface microbes make up an estimated 10 to 20 percent of the biomass — that is, all the living matter — on Earth. Yet until the mid-20th century, most scientists did not think subterranean life of any kind was plausible below a few meters.
The oldest scientific reports of subsurface life date only to the 1600s. In 1684, while traveling through central Slovenia, the naturalist Janez Vajkard Valvasor investigated rumors of a dragon living beneath a spring near Ljubljana. Local residents believed the dragon forced water to the surface every time it shifted its body. After heavy rains, they sometimes found baby dragons washed up on rocks nearby: slender and sinuous with blunted snouts, frilled throats and nearly translucent pink skin. It was not for another century that naturalists formally identified the creatures as aquatic salamanders that lived exclusively underground in water flowing through limestone caves. They are now known as olms.
Olms! One would have expected some Greco-Latin polysyllable; of course I had to investigate, and happily the OED revised its entry in 2004. The definition:
A large, blind, aquatic salamander, Proteus anguinus (family Proteidae), with a whitish eel-like body, very small legs, and reddish gills that are retained throughout life, found only in limestone caves from Montenegro to north-east Italy.
The first cite:
1871 The Olm, which only casually comes to the light of day, along with the overflowing waters of the Cirknitz Lake, was first discovered in 1814, in one of its permanent subterranean abodes.
G. Hartwig, Subterranean World 165
(The Second Edition only took it back to a 1905 textbook.) And the etymology:
< German Olm (first used in this sense by L. Oken Lehrb. der Naturgeschichte (1816) iii. 189; 11th cent. in Old High German as olm, glossing classical Latin stelliō a kind of lizard: see stellion n.), of uncertain origin; perhaps a variant of Old High German molm newt, salamander (see mole n.³). Compare (< German) Swedish olm (1861 or earlier), Dutch olm.
Notes
The German word is used in early modern German dictionaries of the mid 16th cent. in sense ‘newt’.
Not an exciting word, but a good, solid one (like mole and newt).
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