202 GENERAL CONSIDERATIONS. 



north-by-east for at least 6 miles. The Kagankarai ridge is very 

 nearly in line with that near Ahtur, and as an example of the breccia 

 is exposed at an intermediate point (south-west of Mankunju hill), 

 further examination along the line should be made. Other examples 

 of the brecciation bands occur near Munakhal and Mallur, 8 miles 

 south of Salem ; on the western spur of the Jarugamalais, near the 

 Namakal-Salem road ; 3 miles south of the latter place, and further 

 south on the western side of the same road ; south of the Gundut 

 spur of the Shevaroys, as well as in the Shevaroy mass itself, 2 miles 

 north of Yercaud. Similar phenomena have recently been observed 

 by Mr. Hayden and myself in the Monghyr district where the my- 

 Ionised bands are bordered by more pronounced strain- slip cleavage, 

 and the mylonite itself shows less signs of having been raised in 

 temperature; it is hardened but not blackened. 



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