50 



American Fisheries Society. 



lines, and obviously so because the preserving action depends on 

 the deposit of a preservative material on the line, or among the 

 fibers. This change is in some cases of serious importance, as 



NJ^:Jf^ •-'.- v.0NiH« :.!t?o:i3 



Fig. 11. — Stiffness of lines exposed, in sea water at Beaufort, N. C. 



Grouped. 



UNSTHOFLINEBEFORI 

 TREATMENT 100 



z 90 



Z 



I 80 



K 70 

 < 



-60 



Urn 



o 

 X 50 



V9 



-J 40 

 a 30 



UJ 



(0 





ttii 



: { 



— rHi' 4ttlTTT rrftm — 

 _iLLLnf lLi.jiJiiiii:tJ 



M 1 1 H I fit 



ABCDEF&H IJ KLMN0PQR5X 

 SYMBOLS OF PRTSCRVATIVES 



Fig. 12. — Shrinkage of cotton lines caused by one application of the 



various preservatives. 



in those heavy body preservatives that cover the lines with 

 thick coatings. The weighings were all done on the analytical 



