William Fream, 1911 Encyclopædia Britannica, Volume 7… (1911)
“ But now a considerable portion of what would otherwise be lost is saved by passing the milk through separators, and churning the cream into butter. Previously to the enormous development of the urban trade in country milk, dairy farms were in the main self-sustaining in the matter of manures and feeding-stuffs, and the cropping of arable land was governed by routine. To-day, on the contrary, many dairy farms are run at high pressure by the help of purchased materials,—corn, cake, and manure,—and the land is cropped regardless of routine and independent of courses. ”
