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    • Photochromism of o-Nitrotoluenes - Nature

      Nature· 8 hours ago

      THE crystals of 2-(2′,4′-dinitrobenzyl)-pyridine (I), which are colourless when kept in the dark, turn blue when exposed to light1. Hardwick, Mosher and ...

    • Crystals of the Living Body - Nature

      Nature· 4 hours ago

      Growth and purpose require directed arrangement of the protein or other molecules of which the body is made. The protein of a silk fibre is a long chain-like molecule consisting of a sort of ...