. Principles of plant culture : an elementary treatise designed as a text-book for beginners in agriculture and horticulture. Horticulture; Botany. Propagation by Cuttings. leaves, refuse hops or tan-bark. The material intended for heating, if fresh, should be thrown into a pile of sufficient size to generate heat, several days before it is desired for use; and unless already moist, it should be moderately sprinkled with water. In order that all the material may reach the same stage of fermen- tation, the mass should be made into a new pile after the heating starts vigorous- ly, as is indica-


. Principles of plant culture : an elementary treatise designed as a text-book for beginners in agriculture and horticulture. Horticulture; Botany. Propagation by Cuttings. leaves, refuse hops or tan-bark. The material intended for heating, if fresh, should be thrown into a pile of sufficient size to generate heat, several days before it is desired for use; and unless already moist, it should be moderately sprinkled with water. In order that all the material may reach the same stage of fermen- tation, the mass should be made into a new pile after the heating starts vigorous- ly, as is indica- ted by vapor ris- ing from the. Fig. 93. Cross section of hotbed in pit. The frame is (After Greiner). v,„ ;y .1 banked up a little witli earth heap, a n d t h e ' outer part of the mass should be placed in the center of the new pile. Leaves ferment slower than the other materials above named, and hence may often be advantageouslj- mixed with them to lengthen the period of fermentation. Heat is economized by placing the fermenting material in a pit in the ground, but hotbeds are often made above ground. The hotbed pit should be in a well-drained and sheltered place, and two to two and one-half feet deep. In this, the heating material should be moderately packed, until the pit is nearly or quite full. The frame may then be placed over the pit, after which the heating material should be covered with soil and the sash put on to confine the warmth. Within a few days after covering with the sash, the fermenting material usuall}' generates a rather violent heat, which should be permitted to decline to about 90° F., before planting seeds or cuttings in the hotbed. The. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Goff, E. S. (Emmett Stull), 1852-1902. Madison, Wis. : E. S. Goff


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Keywords: ., book, bookcentury1800, booksubjectbotany, booksubjecthorticulture