1)2 Investigations on the Life-History 



The length of these kelts (see Table p. 74) indicates very clearly thnt 

 they belong to the large late-coming fish. They cannot, therefore, be com- 

 pared with the fish in the upper waters in October and November, but 

 should rather be compared with the estuary fish of these months. 



This table shows that : 



1. The percentage of solids in the muscle is slightly less than in the 

 unspawned fish in the upper reaches in October and November, markedly 

 less than in the unspawned fish at the estuaries in these months. 



2. The amount of solids per fish of standard length is no less, perhaps 

 rather greater, than in the unspawned fish in tne upper reaches in 

 October and November, but markedly less than the unspawned fish in 

 the estuaries during these months. Hence the apparent increased sixe 

 of the so-called well-mended kelt is in part, at least, due to increase in 

 the water, and not in the solids of the muscle. 



3. The percentage amount of solids in the ovaries is very much 

 smaller than in fish ascending the rivers to spawn. 



4. The solids of the ovaries per fish of standard length are markedly 

 smaller in amount than in fish ascending the river to spawn. 



