No. 6. DEPARTMENT OF AGRICULTURE. 337 



The next one that I waut to call your attention to is a plum pie 

 filler, the coloring matter of which was made from coal tar color, 

 and the sample to my right is a piece of wool dyed with a small 

 quantity of the color extracted from currant jelly. The piece of 

 wool was originally white. Now, red currants have usually enough 

 color, but in this case the color was supplied by the introduction of 

 coal tar color. 



Here is a sheet containing a number of coal tar colors which 

 have been dyed into pieces of white yarn. These are all coal tar 

 colors that have been derived from various samples of Port wine. 

 Port wine is the product of the grape, but in these particular 

 samples, the port wine from the grapes did not have a high enough 

 color, and consequently the color is obtained by putting in the coal 

 tar color, and making it a brighter red, and more nearly the color 

 desired. 



Meats of all kinds and descriptions are also colored with differ- 

 ent coal tar colors. Here is a piece colored from a coal tar color 

 called a "Blood Ked," and used in a Chicago packing house to color 

 and preserve meat. It contains a mixture of salt, saltpetre and 

 boric acid, and is colored by a coal tar color. This w^as obtained 

 direct from a Chicago packing house. 



Here is a color, a coal tar color, used in coloring smoked meats, 

 and called Ceylon Cola. It is a very dark red, and is very highly 

 advertised as a coloring matter and preservative for meat, and as a 

 substitute for smoke. I was considerably amused at one of the 

 uses for which this coloring was advertised. It was as a preserva- 

 tive of fence posts, by dipping the posts in the color. I suppose 

 that the persons who recommended it knew that dipping the posts 

 into tar was a preservative of them, and thought the coal tar color- 

 ing would have the same effect as the tar. You might just as soon 

 expect to get the same eft'ect from whiskey as from rye. 



The sheet that I showed you a moment ago contained reds taken 

 from Port wine. These reds are the return from Blackberry brandy. 

 Of course, we all know that the term "brandy" is somewhat of a 

 misnomer; it is not properly a brandy. But we should suppose that 

 the dark color of the blackberry would be sufficient to color the 

 brandy properly, but in this case it does not appear to have been 

 so, because its dark color is due to coal tar dyes. There are 

 different colors that can be used, and that were used to give this 

 brandy the proper color. 



Tomatoes are red usually, sometimes yellow, but we should at 

 least suppose that there would be enough color in red tomatoes to 

 color the tomato catsup without being compelled to resort to coal 

 tar colors, but here are eight samples of wool, all of which have 

 been dyed with coal tar colors derived from eight different brands 

 of tomato catsup. The color was made bright enough to appeal to 

 the customer by the use of coal tar color. 



You know that at some seasons of the year, particularly in 

 winter, the hens produce eggs, the yellow of which is not a very 

 bright color. Now, when you use these eggs in making a cake, 

 you can't get a rich color, and to offset that, there has been put 

 on the market an egg color in coal tar colors. It is used in cakes 

 by bakers to get the color of the egg. These colors here do not 



22—6—1907. I 



