K. DOMESTIC AND HOUSEHOLD ECONOMY. 437 



tent to expand and deliver continuously 150,000 cubic feet 

 of air per hour, at a temperature of from 30 to 35 below 

 zero, Fahr. If the actual work accord with these represen- 

 tations, it seems probable that machines upon this principle, 

 beings free from the drawbacks and difficulties attendant 

 upon the use of chemical substances in refrigeration, must in 

 time supplant them. 



DETECTION OF CHICORY" IX A DECOCTION OF COFFEE. 



It was stated at a meeting of the Berlin Polytechnic So- 

 ciety, in reply to an inquiry for a trustworthy test for chicory 

 in boiled coffee, that a decoction of the coloring matter of 

 chicory root is not precipitated by sesqui-salts of iron, but 

 retains its color, while the brown coloring matter of coffee is 

 changed by a solution of sesqui-sulphate of iron to a light 

 green, and is partially precipitated in bluish -green flakes. 

 In a mixed decoction of both, after addition of a few drops 

 of the iron salt the liquid above the precipitate retains a 

 brownish-yellow color, according to the amount of chicory 

 present. The separation of the precipitate may be hastened 

 by rendering the colored liquid slightly alkaline with am- 

 monia. 15 C, 1873, xxiv., 383. 



MUTTON WINE OF THE CHINESE. 



Among the peculiar preparations of the Mongolians and 

 Chinese are certain annualized liquids, which consist of the 

 flesh of different kinds of animals, such as sheep, dogs, deer, 

 snakes, etc., macerated in distilled liquors, with various other 

 ingredients, as sugar, honey, raisins, milk, etc., and then sub- 

 jected to boiling under considerable pressure. The liquid 

 thus prepared has a very strong odor of the animal sub- 

 stances used, and is sweetish to the taste, and very much in 

 voijue as a medicine for curing various diseases. Journal 

 Xorth China Branch lioy. Asiatic Soc, 1873, VII., 237. 



WINE MADE WITH YEAST. 



According to Erckmann, yeast wine is prepared as follows : 

 264- gallons of thick yeast are stirred with 53 gallons of 

 water, a solution of 165 pounds of potato sugar and 4.4 

 pounds of tartaric acid in 79.2 gallons of water, havinc a 

 temperature of 100 to 130, is added, and the whole is fur- 



