The Anatomy of an 18th Century House Center Chimney, Part 2. The beehive oven sitting in the middle of the chimney stacks raises many questions. We know that an earlier fireplace sits behind the one we showed in Part 1. We speculate that the later one dates about the mid 19th century. Since, according to Friedland, the rear oven design fell out of favor by the first quarter of the 18th century, how do we ...