. An address upon farm pests, including insects, Fungi, and animalcules . ,should go hand in hand with the selection of seed. Russellsays entire destruction by fire of all diseased tops should beimperative. THE BRISTLE MOLD. One more species of mold, known as the buttercup-blight,is so common and so peculiar in its growth, that I can not passit by. It is represented in Fig. ;^^. Itsvarieties are all known as bristlemold, and attack damp paper orbooks ; damp specimens in the col-lections of our botanists are fre-quently nearly ruined, and likeother fungi they are dreaded pests. RAPID GROWTH OF
. An address upon farm pests, including insects, Fungi, and animalcules . ,should go hand in hand with the selection of seed. Russellsays entire destruction by fire of all diseased tops should beimperative. THE BRISTLE MOLD. One more species of mold, known as the buttercup-blight,is so common and so peculiar in its growth, that I can not passit by. It is represented in Fig. ;^^. Itsvarieties are all known as bristlemold, and attack damp paper orbooks ; damp specimens in the col-lections of our botanists are fre-quently nearly ruined, and likeother fungi they are dreaded pests. RAPID GROWTH OF FUNGI : YEAST-PLANT. Fig. 33-a, conceptacle of ErisyM^c.^nnunis; YeaSt is a well-knOWn SUbstanCC ^.jporangium of the same highly magm- ^^ ^j| housekeepers, but all do nOt know that it is a plant that thrives on sugar or nitrogenous mat-ter. When the plant is examined under the microscope it isfound to be composed of myriads of minute cells, about onetwenty-four-hundredths of an inch^iin diameter. During theprogress of fermentation these cells^rapidlyjncrease in number,. 65 until all the material necessary to their growth is used up. Itsrapid growth, and the evolution of carbonic acid gas from suchgrowth, makes it convenient for the housewife to raise her prepares her material, puts in her seed, which is some of thespores of the plant either dry or in fluid, and they immediatelycommence their growth. The cells grow together in chains, and when stirred they some-times appear like threads, which are in reality bundles of thefibers of the yeast-plant. If the yeast is not used in this condition, the plant nourish-ment is soon used up, putrefaction commences, and with it comesa swarm of animalcules, countless as they are minute, and vo-raciously devouring all in their way, until they also die fromwant of food, changing the yeast frequently to a mass of animaland vegetable putrefaction. This soon subsides, and vinegaris the result. This can be more fully exemplified by milk-
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