68 Cold-Storage of Fish [Oct 



IV. SUMMARY OF CONCLUSIONS 



1. The proportions of water in, and yield of ash from, the flesh 

 of flounders were unaffected by a nine months' period of cold- 

 storage. 



2. The changes in the proportions of soluble, coagulable and 

 non-coagulable nitrogenous constituents were negligible. 



3. During a nine months' period of cold-storage, there was prac- 

 tically no change in the content of ammonium nitrogen. 



4. For fish with a low content of lipins, there was apparently no 

 increase in the acidity of the muscle lipins during a nine months' 

 period of cold-storage. 



5. There was no production of reducing substance from any 

 constituent of the flesh during any of the storage periods. 



6. There was no evidence, whatever, of any depreciation in the 

 nutritive value, or any change in the sanitary character, of the fish 

 at any time during nine months of cold-storage. 



The writer wishes to record his indebtedness and to express his 

 thanks to Prof. William J. Gies under whose direction this work 

 was done.^^ 



22 See the succeeding paper by Perlzweig and Gies (p. 69), for additional 

 data on this subject. 



