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XXVII.— ZINC AND ZINC ORES, THEIE MODE OF OCCUE- 

 BENCE,METALLUEGY,AND HISTOEY, IN INDIA; 

 WITH A GLOSSARY OF ORIENTAL AND OTHEE 

 TITLES USED FOE ZINC, ITS OEES, AND ALLOYS. 

 By V. BALL, M.A., F. E. S., Director of the Science 

 and Art Museum, Dublin. 



[Read, December 15, 1886.] 



Some years ago I presented to this Society several Papers on certain 

 of the mineral productions of India, regarding which no general 

 accounts founded on the geological examination of the country had 

 up to that time appeared. Since then I have written a volume on 

 the E conomic Geology of India, in which is incorporated all that 

 could be ascertained regarding the useful minerals of the country 

 up to date. In the preparation of that work, the more or less 

 casual references to the occurrence of useful minerals which are 

 to be found in the writings by travellers in India during the past 

 '2000 years were as far as possible explained and relegated to their 

 proper places. Owing partly to the great extent of the literature 

 which exists in the languages, both ancient and modern, of many 

 different nations, and also owing to the fact that many of the 

 works known to me were not accessible in Calcutta when I wrote 

 the Economic Geology, it was unavoidable that the references to the 

 original authorities were incomplete. I have, however, during the 

 past five years devoted a large amount of time to reading up all 

 that I could meet with bearing on the subject, and in that pursuit 

 have acquired, or had opportunities of seeing, a number of rare old 

 books on India which have proved a valuable mine in which the 

 information is no doubt widely scattered, in so far as any one sub- 

 ject is concerned, but in which much information regarding many 

 different subjects is to be found — the result being that I have been 

 enabled to collect a considerable store of facts, which I hope to 

 publish from time to time in a series of Papers more or less similar 

 to the present. 



The subject of this Paper is, as I think I" shall be able to demon - 



SSCIEN. PROC, K. U.S. VOL. T. PT. T. Z 



