THE GROWTH OF STALAGMITES AND STALACTITES 121 



The probable shape of the face, the presence or absence of a 

 "splash cup," the circumference, and the rate of vertical growth, 

 for each of the thirty-two types of stalagmites, have been assembled 

 in Table IV, In addition, the Dichoic Scale has been tabulated. 

 It is now possible, after determining the limits of each of the five 

 factors, to classify the stalagmite, by means of the Dichoic Scale, 

 as belonging to a certain type, and then, as a check, to compare 

 four of the characteristics of this type of stalagmite in Table IV. 



DICHOIC SCALE 



1. The drip is large ^ See 3 or 4 



2. The drip is small See 25 



3. The air circulation is large See 5 or 6 



4. The air circulation is small See 15 or 16 



5. The humidity is high See 7 or 8 



6. The humidity is low See 1 1 



7. The temperature is high See 9 



8. The temperature is low See 10 



9. The concentration is high, type i ; it is low, type 2 



10. The concentration is high, type 3 ; it is low, type 4 



11. The temperature is high See 13 



12. The temperature is low See 14 



13. The concentration is high, type 5; it is low, type 6 



14. The concentration is high, type 7; it is low, type 8 



15. The humidity is high See 17 or 18 



16. The himiidity is low See 21 or 22 



17. The temperature is high See 19 



18. The temperature is low See 20 



19. The concentration is high, type 9; it is low, type 10 



20. The concentration is high, type 11; it is low, type 12 



21. The temperature is high See 23 



22. , The temperature is low See 24 



23. The concentration is high, type 13; it is low, type 14 



24. The concentration is high, type 15; it is low, type 16 



25. The air circulation is large See 27 or 28 



26. The air circulation is small See 37 or 38 



27. The humidity is high See 29 or 30 



28. The hiunidity is low See 33 or 34 



29. The temperature is high See 31 



30. The temperature is low See 32 



31. The concentration is high, type 17; it is low, type 18 



32. The concentration is high, type 19; it is low, type 20 . 



