. The cultivated mushroom ... Mushroom culture. [from old catalog]. 24 PRACTICAL CONSIDERATIONS ventilated; it allows the carbonic acid gas, which is heavier than air, to dpain off from its surface into the walkway, being replaced by fresh air containing a normal supply of oxygen. The dimen- sions above given should not be materially departed from. The ridges should be well packed and carefully combed. A path- way of about 15 inches is left between the SHELF BEDS IN CELLAR concerned. Nevertheless, under many circumstances they are obviously de- sirable. They should be about 2 feet wid
. The cultivated mushroom ... Mushroom culture. [from old catalog]. 24 PRACTICAL CONSIDERATIONS ventilated; it allows the carbonic acid gas, which is heavier than air, to dpain off from its surface into the walkway, being replaced by fresh air containing a normal supply of oxygen. The dimen- sions above given should not be materially departed from. The ridges should be well packed and carefully combed. A path- way of about 15 inches is left between the SHELF BEDS IN CELLAR concerned. Nevertheless, under many circumstances they are obviously de- sirable. They should be about 2 feet wide at the base, tapering gradually to the apex, and not more than about 18 to 20 inches high when compressed and cased. The custom is to make two such beds in contact and then to leave a walk-way of 8 or 10 inches between the next two, and so on till the space is occupied. Next to the walls slanted beds may be prepared. In any case, the manure is made up in the form of the bed desired, and should be firmed or compressed in order to prevent drying out and burning when the second fermentation takes place. At this time the manure should be neither wet nor dry, but merely moist. The only practical test of the proper mois- ture content of the manure which can be relied upon is when upon compres- sion water cannot be readily squeezed out of it. The prevalent opinion among amateurs that the bed should always be deep enough to maintain considerable heat is believed to be erroneous. Grown under more or less uniform conditions, mushrooms seem to require no bottom heat, and the bed should fall to the temperature of the room some time after spawning. Bottom heat, and hence large beds, are, however, desirable when sudden changes of weather would so reduce the temperature of the bed as to delay growth. Under similiar conditions, as well as in the dry air, mulch- ing may be Please note that these images are extracted from scanned page images that may have been digitally enhanced for
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