6 PRELIMINARY COLD STORAGE STUDIES. 



IV. Market cold-storage chickens Continued. Page. 



General discussion 85 



Resistance of bacteria to low temperatures 85 



Development of bacteria at low temperatures 86 



Inhibitory action of low temperatures on bacteria 88 



Chemical changes produced by bacteria at low temperatures 89 



Effect of low temperatures on enzymes 89 



The action on flesh of bacteria and enzymes at low temperatures . . 91 



Review of the literature 91 



Discussion of results obtained in the Bureau of Chemistry 94 



Histo-chemical changes in cold-stored chickens 94 



Changes in fat 95 



Summary of results v 98 



General review of the investigation 99 



Organoleptic tests on chickens and quail 99 



Bacteriological and chemical investigations 100 



Milk m 100 



Chickens 102 



Histological studies 104 



Eggs 104 



Chickens 105 



Appendix 108 



Trend of legislation regulating the cold storage of foods, etc 108 



General discussion aroused by proposed Chicago ordinance 108 



Various opinions on drawn and undrawn poultry 110 



Suggestive legislative action 112 



Massachusetts enactments 112 



Sacramento, Cal., ordinance 113 



Enactments in Illinois 113 



Proposed legislation in New York 114 



Proposed legislation in the District of Columbia 114 



Canadian cold-storage act 114 



