In late 1855 Ferguson & Urie are still concentrating on the plumbing, slating and glazing trade, despite their minor dabble in stained glass, and they advertise locally for roofing slates. A considerable amount of these products arrived on ships as ballast.
The Argus, Melbourne, Tuesday 30 October 1855, page 7.
“WANTED 5000 Duchess Slates, in the Bay. Ferguson and Urie, plumbers, Curzon-street, North Melbourne.”