XV111 CONTENTS. 



CHAPTER XIY. 



METHOD OF THE FABRICATION OF VINEGAR IN APPARATUS OF 



SPECIAL CONSTRUCTION. 



PAGE 



Inutility of most inventions for overcoming the frequent disturbances in 

 the working of a factory not provided with suitable heating and venti- 

 lating arrangements ......... 139 



Singer's vinegar generator, illustrated and described .... 140 



Alirhaelis's rotary vinegar generator ....... 142 



Fabrication of vinegar with the assistance of platinum black, and the 

 apparatus used .......... 143 



CHAPTER XV. 



FURTHER TREATMENT OF FRESHLY-PREPARED VINEGAR. 



The odor of freshly- prepared vinegar and on what it depends ; Filling 

 of the barrels ; The reciprocal action which takes place between the * 

 air and the vinegar . . . . . . . . .144 



Means for improving the odor of vinegar; Manner of drawing off the 



vinegar from the sediment in the barrel, with illustration . .145 



The storing of vinegar . . . . . . . . .146 



Processes which take place during storing . . . . .147 



Advisability of filtering the vinegar; Heating the vinegar; Apparatus 

 for heating the vinegar, illustrated and described .... 148 



Filtration of the vinegar ; Filter for vinegar, illustrated and described . 150 

 Bag-filter for filtering vinegar under pressure, illustrated and described 151 



Sulphuring of vinegar 152 



Fining of vinegar ; Coloring vinegar .... 153 



Preparation of caramel or burnt sugar .... 154 



CHAPTER XYI. 



PREPARATION OF VINEGAR FROM VARIOUS MATERIALS. 

 The formation of diastase ; How vinegar can be prepared from starch . 154 

 How the various kinds of vinegar might be designated according to the 



elementary material used ; Reasons why beer-wort does not seem a 



suitable material for vinegar .... 

 Use of fermented whisky-mashes for the manufacture of vinegar; 



Manufacture of vinegar from malt and grain ; Combination of "the 



manufacture of compressed yeast with that of vinegar . 156 



The most suitable variety of malt for the preparation of vinegar* The 



constitution of malt .... 



.157 



