of tlti; Snl in,-,,, in Fresh Water. 91- 



A balance of the loss of muscle solids and the gain in the solids of the 

 testes may be struck as follows : 



A. Balance to August. 



Solids in muscle of estuary fish from May to August, 

 Solids in muscle of upper-water fish in July and August, 



Loss, 



Solids in testes of estuary fish from May to August, 

 Solids in testes of upper-water fish in July and August, 



Gain, 



Grins. 

 2130 

 1592 



538 



3-7 



18-6 



14-9 



If 14-9 grins, of the solids of the flesh go to the testes, 523 grins, will 

 bf available as a source of muscular energy. 



B. Ihdance to November. 



Solids in muscle of estuary fish from May to August, 

 Solids in muscle of upper-water fish in Oct. and Nov., 



Solids in testes of estuary fish from May to August, 

 Solids in testes of upper-water fish in Oct. and Nov., 



Gain, 



Grins, 



2130 



865- 



1265 



3-7 



59-3 



55-6 



If 55*6 grins, of the solids of the muscle go to the testis, then 1209 

 grins, are available for muscular energy. 



The supply of solids, over that required for the construction of the testes. 

 which is thus available for muscular energy, is considerably greater in the 

 case of them ale than of the fimale fish. 



KELTS. 



Table VII. gives the amount of solids per cent, and in fish of standard 

 length in muscle and ovaries in four of the kelts received in the spring of 

 1897:- 



