Neat photo! i had not heard of Hessian sacks, ever! I had to look that up on Wikipedia. Here in the USA, we call these gunny sacks...today, they are not that common, at least in modern, urban life. As of today, a common use for these is for keeping large fish, mostly salmon, cool while aboard a boat or while shore fishing, by wetting the bag and allowing evaporative cooling. Often sold today in Pacific Northwest USA sporting good stores as "fish bags".