. American dairying: a manual for butter and cheese makers. Dairying. 14-0 American Dairying. different reaction^turning black. Fourth, while it has been supposed by some, that specks of fat when float- ing in the liquid milk in which albumen and caseine are in solution, become coated over with solidified caseine and thus derive their delicate covering, others have supposed that the minute particles of fit become incisted while in the blood vessels, and that they are secreted from the blood ready formed. The fact that milk globules sometimes exist without containing any fat is a sufficient ref
. American dairying: a manual for butter and cheese makers. Dairying. 14-0 American Dairying. different reaction^turning black. Fourth, while it has been supposed by some, that specks of fat when float- ing in the liquid milk in which albumen and caseine are in solution, become coated over with solidified caseine and thus derive their delicate covering, others have supposed that the minute particles of fit become incisted while in the blood vessels, and that they are secreted from the blood ready formed. The fact that milk globules sometimes exist without containing any fat is a sufficient refutation of both of these theories. I have found that instances occur in which a part of the milk globules contained only serum so attenuated, that when dried down, the walls of the pellicle enclosing it would collapse and appear perfectly flattened, while others retained their rounded form, showing them to be filled with fat. In an extreme case the milk of a cow which would not make butter, had part of its globules filled with fat so that they remained round when dried, others with various degrees of depression, but fully one-half appeared to contain no fat at* all, as they were perfectly flattened by drying. In several cases the pellicles covering the serum became adherent and shrunk and tore apart in the middle from the edges sticking to the glass, showing various fractures. An enlarged view of one of these frac- tures is shown in figure 17. By examining milk with the early Fig. 17. morning sun and turning the reflector so that the globules would cast no shadow, I have been able to use a stronger light and get better views than I could with the mid-day light. Under this mode of inspecting, several cases have been met with in which a part of the globules showed no fat, while. 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
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectdairyin, bookyear1876
