of tJie /Salmon in Fresh Water. 



83 



7. THE CHANGES IN SOLIDS AND WATER OF MUSCLES, 

 AND GENITALIA OF THE SALMON IN FRESH WATER. 



BY D. NOEL PATON, M.D., F.R.C.P.Ec. 



In investigating the chemical changes in the tissues throughout the 

 season, we may begin by the consideration of the total solids of the 

 muscles and genitalia in fish from different stations throughout the 

 season. 



METHOD. 



The total solids were determined as follows : 



The fat was extracted from the tissue in the manner afterwards to be 

 considered (p. 93). The residue was then dried at 110 C. and weighed. 

 To this the weight of the fat was added to give the total solids. 



FEMALE SALMON, 1896. 



Table I. gives the per cent, of solids in the thick and thin of 

 muscle, the solids calculated per fish of standard length, the per cent, of 

 solids and the solids per fish of standard length in the ovaries. 



TABLE I. 



ESTUARY FISH. 

 /. May and June. 



