CAXADfAX FisnEinr:s; expeditiow loi.'i-irj 79 



Pr.ATR VII. 



Fig. 19. Herring scale from iiortliernmost Xorway, end of April, showing the com- 

 meneenient of a new .summer's growth. xlO. (Lka phot.) 



Fi(;uui:s IN THE ti;\t: 



Fig. 5. a. and o. Showing pattern formed hy fil)rils in the inner surface of small 

 (young) herring's scale, 

 c. Pattern a superposed over pattern h. Diagrammatic. 



Fig. 7. Herring scale in section. Highl.y diagrammatic. 



Fig. !). Edge of a herring scale in section, indicating true proportions. 



Fig. 10. More central portion of a herring scale in section, showing the appearance 

 of a radial furrow : true pro]X)rtions. 



Fig. 11. Part of a section of a herring scale, the position of two winter rings indicated. 

 True proportions. 



Fig. 12. Effect of silver impregnation of the inner surface of a scale, the course of 

 the fibrils being indicated by small dark spindle-shaped particles. Dia- 

 grammatic. 



Fig. 20. Showing average increase of the last (new) summer belt during the sunnner 

 of 1910 on the scales of young fish caught near Bergen. 



Fig. 21. Composition in point of age of the stock of Norwegian mature herring, during 

 a series of years as shown by the samples investigated. (From Hjort.) 



Fig. 22. a. Shows a scale with normal arrangement of winter rings, 



h. Shows a scale with abnormal arrangement of winter rings, the distance 

 between second and third rings being small. 



Fig. 24. Marking off the growth of scale on a paper sliii. 



Fig. 25. Multiplying the distances marked off on the paper slips by help of a triangle 

 with a moveable side. 



Fig. 26. Composition in point of age of all the seine samples of mature Norwegian 

 herringi, spring of 191 (i. 



Fig. 27. Frequency cui"A'es for growth-dimension /, in Norwegian herring of the year 

 group 1904, during a series of years. 



Fig. 28. Chart showing localities mentioned in the following: the black numbered 

 dots show the positions of the stations of " Steam Drifter No. 33," 

 during summer 1915. 



Fig. 29. Age composition of five samples from various places in Northumberland 

 Strait, spring of 1914 and 1915, each sample kept .separate: the indivi- 

 duals arranged according to age. 



Fig. 30. Composition in point of year-groups of five samples from various places in 

 Northumberland Strait, spring of 1914 and 1915; samples from each 

 season taken together. 



Fig. 31. Age-composition in two samples from iNfagdalen Islands, spring of 1914 and 

 1915. 



Fig. 33. Age composition in samples from the coast of Newfoundland, spring 191:1 



