. American dairying: a manual for butter and cheese makers. Dairying. Milk. i6(^ their presence, and produce the souring. The seeds of the fungus that are concerned in the process of souring are very small, and are always floating in the air unseen and unsuspected. When developed they are of considerable size, so that they are readily seen with a magnifier of moderate power. They are shown at the bottom of the annexed figure, as they appear under a microscope with a magnifying power of i,ooo' diameters. They have a distinct cylindrical form, and are known as arthrococcus, or jointed cells. Col
. American dairying: a manual for butter and cheese makers. Dairying. Milk. i6(^ their presence, and produce the souring. The seeds of the fungus that are concerned in the process of souring are very small, and are always floating in the air unseen and unsuspected. When developed they are of considerable size, so that they are readily seen with a magnifier of moderate power. They are shown at the bottom of the annexed figure, as they appear under a microscope with a magnifying power of i,ooo' diameters. They have a distinct cylindrical form, and are known as arthrococcus, or jointed cells. Cold checks their growth, but never kills them. They are not injured at all by freezing and thawing, or wetting and drying. Nothing but heat kills them. One of these cells, adhering to the sides of a milk pan, or in a cre- vice, may be dried in the most thorough manner pos- sible, and lie there for a week, a month, or even a ^. ^ year, without injuring it in the least. The moment it is moistened with warm milk, it swells up and springs into active growth, and in a short time its progeny may be counted by the million. Premature souring of the milk is the result. They grow most efficiently at blood heat, and nothing short of boiling heat is sure to kill them. A few destructive agencies get into milk through the body of the cow. One of these is represented by the dots in the upper part of figure 26. They are called Micrococcus cells. They are exceedingly minute, and everywhere abundant. Their influence tends to pro-. 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 Arnold, Lauren Briggs, 1814-1888. [from old catalog]. Rochester, N. Y. , Rural home publishing company
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Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectdairyin, bookyear1876
