CONTENTS 



'Definition 



PART I 

 CONDENSED MILK 



Chapter I 



^History and Development Invention of process; development of in- 

 dustry; annual output in U. S., 1899-1920; annual output in other 

 countries; list of condenseries by states Pages 17-29 



Chapter II 

 .gssentials of SuitpM* 1 T-npati^ns for Condenseries Milk supply; water 



supply; transportation facilities; sewage disposal 



Building and Equipment Material of construction; floors, walls and 

 ceilings; ventilation ; drainage; general plan of factory; list of 

 equipment; economic arrangement of machinery; sanitary ar- 

 rangement of machinery Pages 29-43 



Chapter III 



Milk Supply Basis of buying milk; comparative prices paid for milk in 

 1914 to 1918 in the four large condensing territories in U. S.; 

 quality; control of quality; inspection at condensery; acid tests 

 of milk; boiling test; sediment test; fermentation tests. 

 Factory Sanitation Effect on patrons; on wholesomeness of product; 

 "^on marketable properties; how to keep factory in sanitary condi- 

 tion; can washing; care of milk in factory prior to condensing 

 Pages 43-58 



PART II 

 MANUFACTURE OF SWEETENED CONDENSED MILK 



Chapter IV 



Definition 



Heating Purpose; temperature; manner; advantages and disadvan- 

 tages of different methods. 



Addition of sugar kinds of sugar; beet sugar; quality and amount of 

 sugar; mixing the sugar Pages 59-68 



Chapter V 

 Condensing Description of vacuum pan; types of coils; arrangement 



of coils for maximum rapidity of evaporation. 

 Condensers Surface condenser; barometric condenser, wet-vacuum 



spray condenser; care of condenser; expansion tank; catch-all. 

 Vacuum Pump Science and practice of evaporating in vacuo. 

 Purpose of condensing in vacuo; relation of pressure to boiling point; 



relation of altitude to atmospheric pressure; relation of steam 



pressure in jacket and coils, water in condenser, temperature in 



pan and vacuum, to rapidity of evaporation. 

 Starting the Pan. 

 Operating the Pan. 

 Prevention of accidents Pages 68-96 



