Chap. XT J. 1 ohitaldruo : madadkkre. 1125 
specimen that gave the above assay was taken from a loii^ outcrop of 
about fl feet broad on the east slope of the low hill called Dhupa- 
damaradi, about J| miles east of Madadkere. A substance very similar 
to the above, but less manganiferous and more ferruginous, occurs under 
similar conditions along slopes of hills forming the north and south 
continuation of the hill noted above. Thus a sample taken from 
a band of the material 7-8 feet thick on the western slope of the most 
easterly hill range, about \ mile south of the loth milestone on the 
Hiriyur-Hosdurga road, showed only 14% MnO, corresponding to nearly 
11% of Mn, and 37% of hematite. Material very similar to the above 
was foimd also in bands on the western slope of the low hill range about 
J mile east of Madadkere. 
In all these cases hematitic quartzites or a quartz-hematite-breccia 
cap the hills, while earthy ferruginous limestone alternating with the 
earthy manganiferous material underlies the quartzite, and on the 
other side is in contact with granite, gneiss, or grey crystalline lime- 
stone. 
Besides the bands of manganiferous material Mr. Sambasiva Iyer 
says that extensive areas are covered to a depth of 2 to .3 feet, and 
occasionally even more, by a dark manganiferous earth yielding on 
analysis 9% MnO and 70% insoluble residue, and suggests that a close 
prospecting of this earth might lead to the discovery of workable ores. 
4. Nipgudda Hills. 
The Nirgudda Hills lie about 4 miles E.N.B. of Dod Kittadhalli. 
In one of them, called Munisinganagudda, workable ores of manganese- 
ore are said to have been found, the concession being held by 
Mr. C. N. Surya Narayana Row of Bangalore. 
S. Iplapa Hills. 
This name may be given to the range starting about 2 miles south 
of Nirgudda and running for 4 miles south by a little west to the 
Hiriyur-Hosdurga road near Madadkere. The highest point is Iplara, 
3,078 feet. In 1899 Dr. W. F. Smeeth^ found some loose pieces of 
manganese-ore on the Iplara Hills. 
'A few of these are good manganese -ores, but the majority are iron-ores 
eontaining variable proportions of manganese with some silica and small quantities 
up to 1 dwt. or so) of gold.' 
1 Op. ext., II. p. 167, (1898-00); IV, p. 24. (1902-0.3). 
ly 2 L 2 
