Every coal, stone, wood and brick shipment arriving in Toronto Harbour during the 1881 navigation season, animated by date of arrival. Each dot traces a water-borne route at typical schooner speed (~8 mph). Stacks show cumulative arrivals by commodity.
Vessel dots are coloured by commodity. Routes follow navigable waterways: south-shore American ports cross Lake Ontario directly; Lake Erie ports (Cleveland, Ashtabula) enter via the Welland Canal at Port Colborne; Montreal shipments descend the St. Lawrence to Kingston and west along the north shore. Rows with no recorded port of origin are counted in the stacks but have no animated dot.