DEEP-SEA DREDGING. o-j () 



membra licet fractus, animuin demisi, iiec ab incepto 

 desistere potui. . Discaiit dehinc Idstoriae naturalis 

 scituli, rariora naturae absque indefesso labore iiec 

 comparari, iiec iuste iiosci." It does not- appear, 

 however, that Otho Frederick Miiller dredged much 

 beyond thirty fathoms, and in his day the knoAvled^e 

 of marine animals was not sufficiently advanced to 

 warrant any generalization as 

 to their bathymetrical distri 

 bution. 



The instrument usually em 

 ployed in this and other 

 northern countries for dredg 

 ing oysters and clams is a 

 light frame of iron about five 

 feet long by a foot or so in 

 width at the mouth, with a 

 scraper like a narrow hoe oa 

 one side, and a suspending 

 apparatus of thin iron bars 

 which meet in an iron ring for 

 the attachment of the dredge 

 rope on the other. Erom 

 the frame is suspended a bag 

 about two feet in depth, of 



iron chain netting, or of wide-nieshed hempen cord 

 netting, or of a mixture of both. Naturalist dredgers 

 at first used the oyster dredge, and all the different 

 dredges now in use are modifications of it in one 

 direction or in another ; for in its simplicity it is not 



1 Zoologia Danica. Sev Ammalivm Daniae et Xorvegiue rariorum 

 ac minvs notorvm Descriptions et Ilistoria. Avctore Othone Friderico 

 Miiller. Ilavniae, 1788. 



. 44. Otho Frederick Mii 

 Dredge. A.D. 1750. 



