BuL. T'. S. P>- F., iqoR. 



Plate CV. 



Fig. 4.— Fish retainer, with float. ( Phnto.eraphed from model.) 



F"IG- 5-— Fish attendant's ..ntflt— aerator screen, plunger, combined ice pick and scafF net 

 ( Photographed from model. ) 



