Abstract: An open fireplace which includes a fuel supporting device (16) that enables the fire (10) to be seen from all directions. An essentially vertical smoke duct (7) is disposed so that its bottom orifice (18) will be located above the fuel. The fireplace includes means (13) for delivering cold supply air in the form of an air curtain which surrounds the smoke from the fire (10) and causes the smoke to pass up through the smoke duct (7).

Abstract: Described is a method enabling forest seeds to be sown directly in the humus layer. According to the method the humus material is compacted locally and lastingly at the position in which seeds are to be sown. This is obtained by pressing down a funnel-shaped shield into the humus layer with its narrowest end downwards, and leaving the shield in the soil in an inverted position at the planting location. The seeds are then sown on the compacted material in the lower opening of the funnel.