298 GB VPE CULTURE AND 



car, the storehouses or vessels, currents of air are directed 

 with occasionally the vapors of a little burnt sulphur, or 

 other disinfectants, are employed with air to destroy the 

 germs of mould or decay that may have found their way or 

 even have attacked to the grapes or other produce. 



A blower, run by hand or power, furnishes air or other 

 gasses to a system of pipes at the bottom of the compart- 

 ments, and the air, after it circulates over the objects in the 

 compartments ('a number of which can be operated in turns) 

 is allowed to escape by flues, or by these may return to the 

 blower, to repeat its action. All kinds of fruit, produce or 

 meal can be preserved for a long time, at any season of the 

 year; which permits an exchange of the products of our 

 country, aye, of the globe, heretofore unattainable: 



CONCENTRATED PRESERVES. 



The preparation of juices or extracts, purified by air treat- 

 ment and concentrated, was alluded to under sweet wines. 

 Many thousand tons of fruit will annually find their way into 

 the markets in this condensed shape, and with great benefit 

 to all concerned, while in the distructable green state they 

 would have remained almost worthless. The aromatic, fruity 

 flavors are mostly retained by conducting the process of puri- 

 fication and concentration at a heat not exceeding 140 to 

 150 F. There is no necessity to put up these articles in 

 air-tight, hermetically sealed jars or cans; barrels answer 

 the purpose. Nor need those alkaline powders and lyes, 

 under the name of preserving powders or fluids (every one of 

 them detrimental to the digestion of the consumer) be added 

 to the air-purified preserves ; their keeping qualities are se- 

 cured by deglutination. It will be borne in mind that the 

 object in employing the aforesaid injurious adulterations, is 

 to neutralize an acid action for some time, by which alone 

 fermentation or putrefaction can take place. Glycerine, oil 

 or hops, or other essential oils, even sugar, salt, alcohol, etc., 



