. All about milk. Milk. ALL ABOUT MILK 23 Frequently milk contains so much dirt that the specks may- be seen as a sediment in the bottom of the bottle or glass. Ordi- narily, the dirt cannot be seen because the dairyman has filtered the milk or taken out the dirt in a special machine called a ; Filtration will take out the specks and clarifiers will make the milk look cleaner, but these processes do DIRTY MILK not improve the milk except in appearance, germs cannot be The bacteria and i i ^ ^..ji^^^ biRprl |M^|jRi separated or filtered out. You can see for yourself that milk hid
. All about milk. Milk. ALL ABOUT MILK 23 Frequently milk contains so much dirt that the specks may- be seen as a sediment in the bottom of the bottle or glass. Ordi- narily, the dirt cannot be seen because the dairyman has filtered the milk or taken out the dirt in a special machine called a ; Filtration will take out the specks and clarifiers will make the milk look cleaner, but these processes do DIRTY MILK not improve the milk except in appearance, germs cannot be The bacteria and i i ^ ^..ji^^^ biRprl |M^|jRi separated or filtered out. You can see for yourself that milk hides the dirt because milk is opaque—not transparent. Add a teaspoonful of mud to a quart of milk. Mix it up. The milk will look as white and pure as before the mud was added. You will find it equally interesting to make the regulation dirt test. Simply filter a pint or a quart of milk through some clean white cotton or through several layers of white cloth. The brownish or blackish stain proves the presence of 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 Rosenau, M. J. (Milton Joseph), 1869-1946. [New York] The Metropolitan life insurance company
Size: 1911px × 1308px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmilk, bookyear1919
