 This glass, unlike previous type of glass had airbubbes purposly left, as it imitated ancient Roman glass and was in vogue at the time.Clutha line was designed by Dresser from 1888 until 1896 and was retailed by ever present Liberty department store.Dresser focused on form and practicality of his designs, he had great understanding of manufacturing technique "Glass has a molten state in which it can be blown into the most beautiful of shapes.