Optician more important and dignified. Far-sighted or aging colonial Americans imported spectacles from Europe. Spectacles were primarily for the affluent and literate colonists, who required a valuable and precious appliance. Benjamin Franklin in the 1780s developed the bifocal. Bifocal lenses advanced little in the first half of the 19th century. The terms bifocal and trifocal were introduced in London by John Isaac Hawkins, whose trifocals were patented in 1827. In 1884 B. M. Hanna was granted patents on two forms of bifocals which become commercially standardized as the "cemented" and "perfection" bifocals. Both had the serious faults of ugly appearance, fragility,
Quartier des spectacles Quartier des spectacles Quartier des Spectacles is an arts and entertainment district located in the eastern section of Downtown Montreal, designed as a centre for Montreal's cultural events and festivals. The Quartier des spectacles is a member of the Global Cultural Districts Network. With a total area of almost one square kilometre, the Quartier is bounded by City Councillors Street to the West, Berri Street to the East, Sherbrooke Street to the North and René Lévesque Boulevard to the South, encompassing all of the district known as Montreal's Latin Quarter. First proposed in 2002, the area is intended to house