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At Paris the Universe is seen, compos’d of Vortices of subtile Matter; but nothing like it is seen in London.

Writing his great Dictionary, Samuel Johnson was won round to this democratic state of affairs: ‘sounds are too volatile and subtile for legal restraints; to enchain syllables, and to lash the wind, are equally the undertakings of pride.’

A water scavenger beetle called cryptopleurum subtile was identified in a survey of woody debris along the River Nethy near Aviemore.

There are fewer than 20 records of cryptopleurum subtile in the UK.

Recent scientific discoveries have conferred upon man new powers of investigation, whereby nature has been made to reveal secrets so subtile that they never had been dreamt of before in philosophy.