422 MR. A. K. COOMARASWAMY ON THE [Aug. 1902, 
Mr. G. T. Prior’s analysis gave the following results :— 
Per cent 
SiOj" j.cu-eenecereee 25°33 
ALO 8 ee eee 34:96 
FeQss. 0 sat ea eeeaee 4:17 
Cal Wh acd hoe 14°56 
Mig) oi hese ie seen 14-91 
KSOL) neta sete 0°22 
Na,O } i 
Li 50 } eee c es ew ee recess it) oll 
PLO gi ode eee 0-48 
Loss by ignition ... 0°69 
De aetcences ss Roe aee. trace 
BS Oe cies cet cteemn cee (4:17) by difference. 
100-00 
The corresponding formula is 
10 (Fe, Ca, Mg)O . 5A1,0, . 6810, . B,O . 
(15) Rutile.—A brownish-yellow mineral with high refractive 
index, occurring with olivine, phlogopite, spinel, tremolite, etc. in a 
mineral-aggregate in limestones at Gettembe, is probably rutile. 
(16) Zoisite is recorded by Prof. Lacroix’ as occurring in a 
mineral-ageregate in limestone from Kurumegala. 
Garnet and wollastonite: the total absence of these 
minerals from the limestones and contact-modified granulites is 
noteworthy. 
Corundum has not been found in the crystalline limestones as 
yet, although it occurs thus in Burma; and Dr. Grinling’ has 
suggested that the Ceylon corundum may occur in the limestone. 
EXPLANATION OF PLATES XIII & XIV. 
Prats XIII, 
Geological map of the country between Kandy and Talatuoya, on the scale of 
3 inches to the mile. 
Pirate XIV. 
Geological map aud sections of the district lying south-east of Hakgala, on the 
scale of 3 inches to the mile, 
DiIscUssIon, 
Mr. Parkinson, after expressing his sense of the value of the 
paper and the care and elaboration with which the details had been 
worked out, described the contact of granulite and limestone which 
he had seen near Matale, and remarked that he believed that this 
section proved, firstly, that the granulite was intrusive, and, secondly, 
that the intrusion had been attended by absorption of the limestone, 
which had locally modified greatly the composition of the granulitic 
+ Bull. Soc. frang. Minéral. vol. xii (1889) p. 344. 
* ‘Ueber die Mineralvorkommen yon Ceylon’ Zeitschr. fir Krystallogr. 
vol. xxxiii (1900) p. 233. 
