APPENDIX. 445 



is the reducing factor 1.0101 ; hence 1 0,000 liters are 10,000 X 1.0101 

 = 10,101 liters. 82 being exactly the means of 80-84, the reduc- 

 tion is accurate. At 83 the factor would have to be increased by 1 ; 

 at 84 by f, and consequently the factor for 83 would be 1.0101 + 

 (1.0104 1.0101) J = 1.01016. For the practice the above factors 

 suffice without change. The measuring of the temperature and 

 reading off of the percentage of spirit should be done in the storage- 

 cellar, and not in a warmer room, for instance, the office, as is 

 frequently the custom to the disadvantage of the seller. 



