04-11-2017, 10:45 AM
This is 17th century Bayreuth, so it's not early, but it's nevertheless interesting, a drawing of an alchemical furnace in the Wellcome library:
![[Image: 69d9579eb7b7897237cb9557ee7fbde4.jpg]](https://s-media-cache-ak0.pinimg.com/originals/69/d9/57/69d9579eb7b7897237cb9557ee7fbde4.jpg)
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