Complete the notes below using NO MORE THAN TWO WORDS from the passage.

Developments in glassmaking

2nd century AD

• greater emphasis on glass having a , lightness and transparency

• complex were often added, as well as coloured accents

• extra threads of glass used to highlight the of vessels

Late Roman period

• high point of later Roman glassmaking can be seen in containers like the

• certain tools were used to create shapes, which were then attached to simple vessels

Later developments

• from the 15th century, Venetians used old techniques like and thread-glass decoration

• acceptance of as a subject for serious study in the 19th century led to improvements in glassmaking technology

• some methods dating back to the Roman Empire continue to be a for today's glassmakers

Part 1