books.google.com - Over the course of the nineteenth century, factory slaughterhouses replaced the hand-slaughter of livestock by individual butchers, who often performed this task in back rooms, letting blood run through streets. A wholly modern invention, the centralized municipal slaughterhouse was a political response...http://books.google.com/books/about/Meat_Modernism_and_the_Rise_of_the_Slaug.html?id=6hdZ2BXP2GEC&utm_source=gb-gplus-shareMeat, Modernism, and the Rise of the Slaughterhouse
