Afternoon Tea at Ross

We visited a small restaurant the other day in Ross, Tasmania.  There is no supermarket of any type or kind in the small rural town.  The Cafe is popular, it sells scallop pies, sandwiches, light meals, biscuits, vanilla slices, jelly slices and so on.  Also, there is a delicatessen.  It's about 1 hour drive from home here, in Launceston, Tasmania. Ross was settled in 1812.

I thought I had posted this post, but it seems not.

The Fireplace

This fireplace is located in a house in Ross, Tasmania and at the front or adjoining is a cafe and shop.  I thought I'd done a post on inside the shop but can't find it, will do it later.

Anyway the owner of the house and cafe showed us this old fireplace in his office, asked me could I share it online as someone somewhere might help solve or come up with ideas of what these motives mean.  It's thought one of the convicts who carved the designs on the Ross Bridge [ here ] may have been done by one of them or the same person/s.  The bridge was completed in 1836.

Does anyone know what these symbols mean?  Or have a suggestion.