By JOHN T. WARD
Running along the front of 37-43 Monmouth Street, the century-old sidewalk is inlaid with hundreds of thick squares of purple-tinged glass arranged in neat grids.
For observant walkers, the sidewalk is curiosity underfoot. For the tenants of the building fronted by it, and whose cellars extend underneath it, the sidewalk has been a source of eerie subterranean illumination.
“The light from outside would come right in,” said Teresa Manning, business manager for Rocar Properties, which owns the building.