GENERAL INTRODUCTION TO THE ZOOLOGICAL REPORTS. 



was 6 inches wide at the narrowest part. The scrapers were 3 inches in width, and 

 the distance between their scraping edges 7^ inches. On one of the arms, about 



Fio. 4.— The frame of the Deep-Sea Dredges used on board the PORCUPINE, side and end view ; a, Spun-yarn stop. 



one-third of its length from the ring to which the dredge-rope is attached, there was a 

 breach of continuity in the arm, each free hmb of the severed iron ending in an eye 



Fio 5. — The frame of tlie Deep-Sea Dredge, end view. 



or a ring. These rings were stopped together by a couple of turns of spun-yarn 

 (fig. 4 a), so that in case of the dredge becoming entangled, or wedged among rocks or 



