It took several incarnations to come up with a satisfactory design for the bottom heated greenhouse bench. In the final version we used two 55 gallon drums welded end-to-end for the firebox and a salvaged piece of 12” stainless steel chimney for the horizontal flue. We learned the hard way that a large firebox and flue are necessary to dissipate the intense heat into the surrounding air chamber and to minimize heat stress on these components.
The SFJ library owns a lovely old leather volume, “How the Farm Pays” which features a curious and thought-provoking treatise on farming 100 years ago. We offer the introductory remarks, originally presented as an interview of the authors, here for your review. Hope you find this as interesting and useful as we have. SFJ
Usually the keeping of hogs in any large number on the farm is not profitable. Like many other things, it is confined to sections of the country where it is made a special business. Still, it is well on most farms at least to have a few to eat up the garbage, or the offal from the dairy, and I will endeavor to state what I believe is the best method of raising them, and the kinds best suited for the purposes of the average farm.