A ""T CORRESPONDENTS. 



6 



H.K., Try on, Pa. If you first rub the metal 

 with a solution of equal parts of muriatic acid and 

 alcohol your labels will stick with common paste. 



ooc- 



Rob't. James, Macon, Mo. We do not believe it 

 would pay you in the long run to buy it. 



"***" s 



E. I. M., Waco, Tex. From the measurement 



and description given would think it Worm-eating' 

 better send a skin for positive identification. 



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A G., Vicksburg, Miss. We think it has suspend 

 ed but are not certain, better write D.M.Averill of 

 Portland, Ore. 



S.P.T., Hastings, Neb. Durable luminous paint 

 can be made by mixing when dry 4 parts bichro- 

 mate of potash, 45 parts of gelatine, and 50 parts 

 sulphuric calcium, all pulverized. When mixed, 

 stir in 2 parts hot water; after being applied and 

 dried in the sun it becomes imprevious to^ water. 

 -*♦*- — ■ 



G.Matre, Western, Nebr. To etch on steel, heat 

 the metal a little and cover with melted beeswax, 

 hold over a flame until evenly distributed; drawing 

 should be made with sharp needle; cover with so- 

 lution water 2 parts, nitric acid 1 part: etch three 

 minutes and remove coating. 



