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<p>[QUOTE=&quot;spirit-of-shiloh, post: 34816, member: 32&quot;]LOL..I know now,horse urine ammonia fumes of the past. <img src="styles/default/xenforo/smilies/tongue.png" class="mceSmilie" alt=":p" unselectable="on" /></p><p><br /></p><p>Ammonia fuming is a traditional process for darkening and richening the colour of oak. Supposedly it was discovered by observing the way that oak beams in stables were darkened on exposure to the fumes from horse urine. Thanks to Haber and Bosch, we can now do this with convenient ammonia, and we don&#039;t need to keep a horse in the workshop.[/QUOTE]</p><p><br /></p>

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