Edgar Williams in a playpen tub, Dunedin, New Zealand, ca. 1892-93, by William Williams. Part of the National Library of New Zealand collection, via Shorpy.
Another possible garden use for a galvanized farm tank.
William Williams (1859-1948) was a talented amateur photographer who worked for the New Zealand Railways Department.
Below is another (more formal) Williams photo of Edgar in the garden, via the National Library of New Zealand.
Edgar lived to be over 90, by the way. He was also a photographer and bequeathed thousands of his father’s and his own black and white negatives to the National Library.