liquefactio vitri ab igne inseparabilis est, eiusque liquefactio caliditatem caliditatem requirit. Coal, producens gas, and city gas are not used in the early days. Gravis, petroleum coke, gas naturale, etc., necnon combustiones oxygenii puri moderni, omnes in fornace combusti sunt ad flammas generandas. Maximum ingenium...
Read more