90 

 Sweeping- JVets. 



A mucli heavier net is required for this purpose, to support the wear 

 coming from vigorous sweeping back and forth in shrubbery and grass. 

 The ring must be very heavy and provided with some means of pro- 

 tecting the cloth from wear at its point of attachment to the ring, and 

 the cloth or bag itself shculd be of much heavier material than in the 

 butterfly nets. 



724. THE DEYROLLE SWEEPING NET. 



The ring of this net is a strong flat piece of brass or steel, hinged 

 on either side to allow folding into small compass and grooved exte- 

 riorly, the groove being pierced by numerous small holes, so that the 

 net can be fastened on the inside and the fastening twine will be pro- 

 tected from wear by being sunk in the exterior groove. The net rim 

 has a square tongue which enters the ferule and is fastened in place 

 for use by means of a milled screw. 



725. THE KIESENWETTER SWEEPING NET. 



The principle of this net is in general the same as that of the Riley 

 Butterfly Net, but the ring is of much heavier wire and the net proper 

 is attached to it by means of numerous small brass rings slipped on the 

 main ring of the net. These rings should not be more than three- 

 fourths of an inch apart, and the bag is sewed to them with strong 

 twine and thus protected from wear and tear. 



726. THE FISH-NET RING. 



A very satisfactory ring for a beating net is the smallest size of brass 

 folding net ring used for catching minnows. It is made of strong wire 

 and folds in two or three places into small compass and may be used 

 with or without rings, as in the last net described. 



Water IVets. 



These nets are smaller than those just described and the net proper, 

 which maybe either of cloth or wire netting, is much shorter, not much 

 exceeding the diameter of the net ring. 



727. THE PACKARD WATER NET. 



The net ring in this apparatus is moderately strong and is bent 

 squarely across at the front edge to facilitate the scraping of logs or 

 submerged stones. The net proper is either of coarse grass cloth or 

 wire netting. 



728. THE JOCKEY-CAP DIP NET. 



This is a small water sieve or scoop and is made of wire netting and 

 tin. It is used to collect any particular specimens of aquatic insects or 

 to scrape submerged stones or timber. 



