Quenstedt (c. 1685) and others - in a controversial interest, to blacken the Calvinists still more - distinguished which articles were " fundamental."
Abney and Baker have shown that the pure dry chloride does not blacken when exposed in a vacuous tube to light, and that the blackening is due to absorption of oxygen accompanied by a loss of chlorine.
A Machiavellian tract on the fundamental maxims of Venetian policy (Opinione come debba governarsi la repubblica di Venezia), used by his adversaries to blacken his memory, is undoubtedly not his.
This helps to blacken the image up a bit, without harming the more delicate pencil shading.
We also visited the nearby boatyard to book in for a haul-out early next year - to scrub and blacken Rosy's bottom.