for commercial roasters, to allow for large batches of coffee. Nevertheless, home roasting continued to be popular. A man working at a commercial roasting plant beginning in the 1850s in St. Louis, Missouri, said that "selling roasted coffee was up-hill work, as everyone roasted coffee in the kitchen oven." He said the arguments his company employed against home roasting included appeals to the economy of saving fuel and labor, the danger of burns and flaring tempers, and the possibility of ruined beans or bad-tasting beverage. Nevertheless, appliances catering to the home roaster were becoming popular; in 1849 a spherical coffee roaster was invented in Cincinnati, Ohio, for use on the top of a wood-fired kitchen stove, fitted into a burner opening. Inventor Jabez Burns, the nephew of Jabez Burns the religious scholar, noted that, with skill and experience, even the simplest implements such as a corn popper could be used in the home or camp to obtain evenly roasted coffee. He said in 1874 that "patent portable roasters are almost as numerous as rat traps or churns." Green beans were available at the local general store, or even through mail order; an early issue of the Sears catalog offered green coffee. For roasting, many people used such simple methods as a layer of beans on a metal sheet in the oven, or beans stirred in a cast-iron skillet over a fire. Despite the wide popularity of home roasting, Burns felt that it would soon disappear because of the great strides made in commercial roasting in the 1860s and 1870s, including the benefits of the economies of scale. The commercial roaster inventions patented by Burns revolutionized the U.S. roasting industry, much like the innovations of inventors in Emmerich am Rhein greatly advanced commercial coffee roasting in Germany. As well, the 1864 marketing breakthrough of the Arbuckle Brothers in Philadelphia, introducing the convenient one-pound (0.45 kg) paper bag of roasted coffee, brought success and imitators. From that time commercially roasted coffee grew in popularity until it gradually overtook home roasting during the 1900s in America. In 1903 and 1906 the first electric roasters were patented in the U.S. and Germany, respectively; these commercial devices eliminated the problem of smoke or fuel vapor imparting a bad taste to the coffee. In France, the home roaster did not yield to the commercial roaster until after the 1920s, especially in rural areas. Coffee was roasted