DECCAN TRAP. 191 



tlons of identical character were found by me in a bed of tracby tie agglo- 

 merate, crossed by the lower zigzags of the path 

 In Aden. i t f. i 



leadmg from the cantonment at Aden up to the 



signal station on Jebel Shem Shem. These Aden specimens were 

 smaller and less beautiful than the Indian ones. 



Calcspar occurs very frequently with both basaltic and amygdaloid 



trap. Traces of crystals of calcite often show on 

 Calclte. . . 1 



or msidegeodes of agate; in most cases the crystals 



are six-sided pyramids or "dog^s-tooth^^ crystals. 



Magnetic iron occurs commonly diffused through, the mass of the 



basaltic and doleritic traps and in considerable 

 Magnetite. 



quantity, as may be seen by the large quantity of 



magnetic iron-sand carried down by almost every stream flowing across 



the trap rocks. 



Arragonite was found in occasional radiated amygdala in the 

 Arragonite. doleritic trapflows, e. ^.j near Miidhol. 



Red bole occurs frequently in amygdaloid beds and in some volcanic 



ash beds, e. g., in the flanks of Wullubgarh and at 

 , Bole. 



Turweh (Toorweh) near Bijapur. 



Green earth is not very often seen even in amygdaloids, but occa- 

 sionally it occurs in films coating the individual 

 Green earth. 



amygdala included in the mass. 



Olivine, usually so common in basaltic rocks, is not very often seen 



owing to the greatly weathered condition of the 

 Olivine. 



basaltic flows and to the great rarity of quarries in 



which freshly exposed surfaces may be examined. The best specimens met 



with were found in the flow forming the watershed plateau south-east of 



Batkurki (12 miles south-west-by-south of Kaladgi), in the first high 



basaltic hill south-west of Nelserri Travellers' Bungalow on the Belgaum- 



Kaladgi road, and in Maswa hill north of Shengaon in the Ved Ganga 



valley. 



( 191 ) 



