TkiUay 



nee/ 



J 



Fig. 24 

 PRACTICAL WOODEN LABEL USED IN TESTING BEDS 



Fig. 25 

 Mr. J. Horace McFarland, of Harrisburg, uses a label formed from a 

 wooden block of cypress thoroughly soaked in white lead and covered 

 with a rectangular piece of zinc. The writing is done with a solution 

 of platinum chloride — ten grains to four ounces of water, put on with 

 a gold pen 



x.\ 



Fig. 26 

 CELLULOID LABEL 



A thin piece of paper bearing name, etc., is cemented between two 

 clear strips of celluloid. Cementation is effected by flowing a small 

 quantity of amyl acetate (banana oil) between the strips of celluloid 

 and paper, placed between two glasses under pressure until dry. A 

 hole may be punched in end for string or wire and edges trimmed to 

 make a neat appearance 



Suggested by Mr. F. F. Christine, of Philadelphia 



