PERCENTILE PROPORTIONS OF LAKE AND ATLANTIC SALMONS. 135 



Ad. to C. — The proportion for the 12.8-mch Presumpscot male and the 13.2-inch 

 female, tlie 14.7-inch breeding Presumpscot male and 14.8-inch breeding female have the 

 lowest proportions of the lake salmon length-classes and lower than any of the Atlantic 

 salmon. The 17.6-inch breeding Grand Lake male, the 25.5-inch breeding Sebago male, 

 the 21.9-inch non-breeding Sebago male, and the 19.3-inch breeding Grand Lake female 

 are all equal to the 28.3-inch breeding Atlantic male and the male 8.4-inch parr. The 

 proportion for these is the lowest among the lake salmon. In their proportions, the 

 remaining two, the 18.9-inch Sebago breeding female and the 16.5-inch non-breeding 

 female are like six of the remaining length-classes of Atlantic salmon as well as the 

 6.5-inch male and female parrs. 



Snout to P. — Only the Sebago 25.5-inch breeding male equals no length-class of 

 Atlantic salmon in this proportion. It exceeds the highest of the Atlantic salmon (28.3- 

 inch male and the 28.6-inch female) by three per cent. The length classes, however, are 

 incomplete. 



P. to V. — The proportion of the 21.9-inch Sebago female is the highest of the lake 

 sahnon length-classes and equals the 28.6-inch breeding female and the 29.3-inch non- 

 breeding female, the highest of the females of the Atlantic salmon. They also equal the 

 6.5-inch male parr. The 12.8-inch Presumpscot male and 16.5-inch Sebago female equal 

 only to the 6.5-inch female parr. 



V. to A. — Here is a continuous series of averages of proportions in which the highest 

 for the lake salmon is Uke the lowest for the Atlantic sahnon, which leaves only one, 

 also the 25.5-uich breeding male Sebago salmon unrepresented in the proportions for the 

 length-classes of Atlantic sahnon. But instead of being the highest proportion for the 

 lake salmon, as it is in snout to P., it is the lowest. 



In their proportions six of the ten length-classes of the lake salmon equal those of the 

 three parrs, which are aUke. They are: the 12.8-inch male and the 13.2-inch female, 

 the 14.7-inch breeding male and the 14.8-inch breeding female, Presumpscot fish, and the 

 21.9-inch male and 16.5-inch female Sebago salmon. 



The proportions for the 17.6-inch breeding male and the 19.3-inch breeding female 

 Grand Lake salmon, also the 18.9-inch breeding Sebago female equal those of the 13.9- 

 inch male and 24.8-inch male Atlantic salmon. The proportion for the 25.5-inch Sebago 

 breeding male is the lowest of the lake salmon proportions and 2 per cent lower than the 

 lowest for the Atlantic salmon. 



A. to C. — The ranges of the proportions for the length-classes of lake and Atlantic 

 salmon overlap so that the second and third of the lake salmon correspond with the 

 first and second of the Atlantic salmon, thus leaving one proportion only not represented 

 in those of the Atlantic salmon. This proportion is for the two length-classes of Grand 

 Lake 17.6-inch breeding male and the 25.5-inch breeding male of the Sebago salmon. 

 Nevertheless the lake and Atlantic salmon differ in the predominant proportions of each, 

 in that five length-classes of male and female lake salmon, having the same proportion, 

 correspond to only one in the Atlantic salmon, i.e., the 28.3-inch breeding male, which 

 has the lowest proportion of the Atlantic salmon ; and five of the eight length-classes of 



