INDUSTRIES DEPENDING ON PI^ANT PRODUCTS 1685 



enters into combination and, conseqxiently, of the amount which must 

 be used. 



Therefore precipitation in presence of sulphurous acid, a method seldom 

 now used for musts concentrated by Boirytis cinerea, must be avoided as 

 much as p^ossible. 



VinaWy, during three or four years, the normal period of preservation 

 of wines, a certain increase in the amount of combined sulphur dioxide must 

 be expected. This is due to the formation of aldehyde, and to the concen- 

 tration of the liquid by spontaneous evaporation. 



These researches shew that sulphur dioxide in a state of combination 

 plays a ver}- complex part in wine-making, nearlj^ as important as that 

 of the free dioxide. The latter alone can ensure the preservation of sweet 

 wines, and, consequently, care must always be taken that its proportion never 

 becomes less than 25 to 30 mgms. per litre; but since the amount of total 

 sulphur dioxide must never exceed a certain limit, the amount of combined 

 dioxide must be watched also with much care. 



Besides, it is alwaj's important to preserve heavy wines with as little 

 total sulphur dioxide as possible, and hence it follows that the utmost 

 care must be taken to diminish the amount that enters into combination, 



1 2 16 -The Dessication of Potatoes in Germany. — p.\ro\v, iu Gi-o> ;,/«t', No. 73-74, p- 572 



Koeniusberg, Pr., Sept. 9, 1916. 



The dessication of potatoes has made rapid strides in Germany. The 

 number of factories grew from 3 in the first year, 1903, to 39 in 1196, 199 

 in 1909, 403 in 1912, and 488 in 1914. 



The need for these factories has become more apparent than ever 

 since the outbreak of the war, and the Government helps to start them 

 by granting subsidies. The " Trocken-Zentrale, " at Berhn was directed 

 to do all that was possible to hasten the construction of dessicators. The 

 " Trocken-Kartoffel-Verwertungs-Gesellschaft " (Society for utilising 

 dessicated potatoes) has been founded in order to collect and distribute 

 the output, and this has helped to increase the number of factories to 

 721 in 1915. On July, 1916, there were in all in the German Empire 

 841 factories, which were distributed as follows among the different 

 provinces : 



Anhalt lo Hanover 22 



Bavaria 10 1 1 csse-Nassau i 



Brunswick 8 Pomerania 151 



Free Towns i Posen 152 



Hesse, (irand Duchy 2 Rhenish Provinces 3 



Saxony, Kingdom 9 Saxonv , Province 44 



Mecklenbourg 27 Silesia iiS 



Saxe- Weimar 3 Schlesvvig-IIolstcin 2 



Schwarzbourg-Rudolstadt ... 2 Westphalia 2 



East Prussia 43 West Prussia 71 



Brandenbourg 1 30 



