Fat- Soluble Vitamines in Marine Animals and Plants. 447 



Herring and Cod. 



I have mentioned in the introductory remarks above that the fat organ of 

 the herring and the liver of the cod both decrease in weight at the same time 

 as the ovaries of the female animal increase in weight. An examination of 

 the contents of fats and of fat-soluble vitamines of the ovaries (the roe) 

 would therefore seem desirable. Fig. 8 shows the effect of addition of oil 

 extracted from the ovaries of herrings. 



Fresh cod roe (figs. 9 and 10) in a dose of 2-3 grm. per day produced an 

 immediate and rapid increase in the weight of rats. Dried roe, prepared in 

 Norway for commercial purposes (1 grm. added per day), had (figs. 11 and 12) 



I30r 



5 10 15 20 25 30 35 40 45 50 55 



Fig. 11. — Dried cod roe, 1 grm. per day. 



130 

 120 



110 

 !00 



90 

 80 



70 

 60 

































































almo 

 clea 



st 

 r 

















jEye 











































































10 15 20 25 30 35 4 45 50 55 



Fig. 12. — Dried cod roe, 1 grm. per day. When first given 

 one eye very bad, after some days almost clear. 



just as marked an influence ; and this fact must, like the effect of the dried 

 ulva, be considered as very important, since it proves that the process of 

 drying fish products had no observable destroying effect on the growth- 

 vol. xciii. — b, 2 I 



