Studies on fermentation : the diseases of beer, their causes, and the means of preventing them . of thealcohol was sixteen or seventeen times that of the plant. The structure of the plant differs considerably when it livessurrounded by air, and when it is more or less completelydeprived of that fluid. If it has an abundance of air at itsdisposal, if it vegetates on the surface of a moist substance orin a liquid in which the air held in solution may be renewe<lwithout being incessantly displaced by carbonic acid gas, weshall see it develop as an ordinary fungoid growth, with amycelium consis
Studies on fermentation : the diseases of beer, their causes, and the means of preventing them . of thealcohol was sixteen or seventeen times that of the plant. The structure of the plant differs considerably when it livessurrounded by air, and when it is more or less completelydeprived of that fluid. If it has an abundance of air at itsdisposal, if it vegetates on the surface of a moist substance orin a liquid in which the air held in solution may be renewe<lwithout being incessantly displaced by carbonic acid gas, weshall see it develop as an ordinary fungoid growth, with amycelium consisting of filaments more or less slender, branching,and entangled, sending up from the surface of the liquid aerialorgans of fructification. This is the well-known form of \cge-tation of the common mucor. On the other hand, if we compelthe mucor to live in a saccharine liquid with insufl&ciency of air, atleast for some of its parts, the mode of vegetation will changecompletely, as we have seen in the case oipenicilUum, asperyilluSy [* For English equivalent see Experiment I, p. 135.] PI V. 4oo Larkertauer del Picart sc MucoR, Ve(;etating Submerged, in Deficit of Air. STUDIES ON FERMENTATION. 137 and mycoderma tini when submerged, but with this difference,that in the case of the mucor the changes in question, and theactivity of nutrition under these new conditions, are much moremarked than in the case of those other organisms. The sporesgrow larger and the filaments of mycelium which do developare much stronger than those in the normal plant. These fila-ments put forth, here and there, other filaments which detachthemselves and vegetate at the side of the others, being ter-minated or interrupted by chains of large cells, species ofspores which can live by budding and reproducing cells similarto themselves or by elongating into filaments. Plate V. represents the living plant submerged at a littledepth, and having, consequently, still at its disposal a certainquantity of air, insuff
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondo, bookyear1879
