Quarantine with a disinfecting stove, have a right to navigate the Canal, in quarantine, subject only to the landing of those who were suffering from plague. Plain yellow, green, and even black flags have been used to symbolize disease in both ships and ports, with the color yellow having a longer historical precedent, as a color of marking for houses of infection, previous to its use as a maritime marking color for disease. The present flag used for the purpose is the "Lima" (L) flag, which is a mixture of yellow and black flags previously used. It is sometimes called the
Flag of Ontario the Canadian Red Ensign, which had been the "de facto" national flag of Canada since 1867. The flag is a red field with the Royal Union Flag in the canton and the Ontario shield of arms in the fly. The coat of arms of Ontario had been previously granted by Royal Warrant of Queen Victoria in 1868. It features a green field with three gold maple leaves and above it, a white band with a red St. George's cross. The specifications of the flag are 1:2. The shade of red in the flag is specified as "British Admiralty Colour Code