Report of National Museum. 1893 —Merrill. 



Plate 13. 



Stalagmitic Marbles. 



Fig. 1. Cross-section of blocli. Cat. No. 67366, U. S. N. M. Marion County, Virginia. 

 Fig. 2. Cross-section of block. Cat. No. 67617, U. S. N. M. El Paso, Texas. 

 Fig. 3. Longitudinal section of stalagmite. Cat. No. 67981, U. S. N. M. Luray. Virginia. 

 Fig. 4. Cross-section of stalagmite. ' Cat. No. 67981, U. S. N. 31. Luray, Virginia. 



