structure evolved from a prehistoric form containing the essential core and crucible.' The transition from the mid-fifteenth century European blast furnace to the early nineteenth century charcoal furnace of Pennsylvania was gradual. Technological changes occurred chiefly in the shape and size of the

were not in operation. 1° Puddling furnaces in eastern Pennsylvania tended to use anthracite coal, according to Temin, the proximity of the mines and the earlier development of canal and rail transportation in the East being advantageous. The Safe Harbor Rolling Mill was cited by Temin as using

presentations would be staged in Quarryville Memorial Park on a large old flat bed trailer, today's answer to the Conestoga wagon. When the Southern Lancaster County Historical Society, Inc, was ap- proached, it decided to portray the Christiana Riot of 1851 as its presentation. Your president and editor

did entertain the Pennsylvania Association of College Presidents and Professors in the hall dedicated to Diogenes. In 1887 Dr. E. V. Gerhart and the "German Mafia" planned their strategy with the skill of Field Marshal von Moltke. After all the defeats of prior years Clio finally adopted "Modern