570 Wisconsin Academy of Sciences , Arts, and Letters . 
the connecting rods as well as onto the rings, thus making 
flexible joints, so that this part of the net is collapsible. 
The connecting loops are held in place by pieces of small 
brass wire soldered to the rings on either side of them. The 
small wires which are soldered to the upper ring are bent 
across from one side of the supporting wire to the other and 
thus form loops. Three short pieces of heavy fish line are 
fastened to these loops at one end and to a metal ring at 
the other and the whole net is suspended from a piece of 
rope attached to the metal ring. The three pieces of fish 
line may also be tied in the form of a loop which serves for 
the attachment of the supporting rope. The canvas cover¬ 
ing is on the inside of the framework and projects about 
3 cm. below the lower ring for the attachment of the bolting 
cloth cone. The upper end of the canvas is turned outward 
over the upper ring and sewed in place below it. The can¬ 
vas is attached to the lower ring by a piece of braid or a 
narrow strip of canvas which is sewed to the outside of the 
truncated cone both above and below the ring. 
In making the bolting cloth cone it is best to use a pat¬ 
tern made of paper for cutting the cloth. In making the 
