PRODUCTS OF THE SPRUCE FIR. 51 



Of these two resins, the first is not found in English com- 1867. 

 merce : the second constitutes genuine Burgundy Pitch, pre- 

 cisely such as may be bought in the London market. The 

 quantity of this purified resin produced annually, it will be 

 observed, is very considerable, being equivalent to 77,000 

 pounds, or more than 34 tons weight. Baron Linder is likewise 

 an exhibitor of the crude resin of Pinus sylvestris, of the same 

 in a purified state, of Oil of Turpentine, Iceland Moss, and a 

 few other productions of Finland. 



The Paris Exhibition shows that true Burgundy Pitch is also J. G. Mill- 

 produced in Germany. Mr. J. G. Miiller of Locherberg, near ler * 

 Oberkirch, in the Grand Duchy of Baden, has taken the trouble 

 to exhibit an instructive and complete series of large specimens 

 in illustration of the products of the Spruce Fir, comprising : 



1. Portion of a stem of Abies excelsa about four feet long, treated 

 for the production of resin. This stem has had cut in it longi- 

 tudinally at equal distances, four even and regular channels, an 

 inch and a half wide and of the same depth ; from the sides of 

 the channels, the resin exudes and is scraped off with an iron 

 instrument made for the purpose. 



2. The crude resin (Roh-Harz) as scraped from the stem, 

 contained in the original triangular bark-basket used in the 

 country. 



3. Wasser Harz. This has been obtained by boiling in water 

 and pressing the crude resin. It is grey and opaque, contains 

 much water, and is identical with an impure but genuine Bur- 

 gundy Pitch sometimes found in the London market. 



4. Gereinigtes Fichtenharz, R6sine purififo. This is No. 3 in a 

 purified condition, or, as we should call it, True Burgundy Pitch 

 in its purest condition. 



In addition to these specimens, Mr. Miiller also exhibits 

 samples of resin prepared for the use of brewers, who, in Ger- 

 many, employ resin (Brauerpecti) for coating the inside of beer 

 casks. 



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