The fishing outfit can be divided into movable apparatus and fixed apparatus, the latter being the less important for our study. Belonging to the former, there are: _a_) The _Wonderkuil_ (_anglicé_: miraculous pocket) which, like the _Kwakkuil_ and the _Dwarskuil_, is composed of a net, in the shape of a pocket which has its mouth kept open by a square frame (made of four pieces of wood called “juffers-oorstokken”). The net is moved ahead while holding the frame vertical, all the apparatus touching the bottom. The fish enters at the mouth and is captured in a convergent bag. The movement through the water distends the net. The “Wonderkuil” is hung between two “Botters”, which go ahead at the greatest possible speed so as to entrap the quick swimming fish, such as the herring. The large “Botters”, being good sailers, are very well suited to this work. The “Wonderkuil” scarcely touches the bottom on account of the great speed, but every fish which comes in front of the opening is taken, necessarily. The narrowing of the meshes, caused by the great speed, prevents any from escaping. _b_) The _Kwakkuil_, used at Vollendam, is a small “Wonderkuil” drawn by one boat which is generally a “Vollendammer Kwak”. The pocket is then attached to two beams fastened together crosswise at the stern of the boat. As the speed is less than that attained with the “Wonderkuil”, the net drags along the bottom which enables eels, plaice and sole to be taken. _c_) The _Dwarskuil_ (transverse pocket), smaller than the “Kwakkuil” but of the same shape, is fastened to the side of the boat by lines which lead to the bow and stern. In order to work it, the boat must move crossways and, naturally, its change of position is slow. The boat should not be flat bottomed, and while fishing is going on the lee boards should be raised. The “Wonderkuil” is used in deep water and on hard sandy bottoms; in shoaler water and on soft bottoms the “Kwakkuil” is brought into play, and in the shallow waters of Utrecht and Gelderland it is the “Dwarskuilen” which is employed. The many complaints about the destruction of fish by the “Wonderkuil” were not born of yesterday; for already, in 1559, an ordinance fixed the size of the meshes of the “Aetkens of Steerten” (of the tails of the nets). There should certainly be mentioned as part of the movable outfit, the drag nets used for catching herring, anchovy, sole and smelt. They are used in all the large fishing ports of the Zuiderzee. These nets are dragged between any two boats whatever.