42 



D. Pram — Flora of Narcondam and Barren Island. [No. 2, 



It is in this last-named area that the islands of Narcondam and 

 Barren Island, which form the subject of the present paper, are situated. 

 These islands the writer was, through the kindness of Col. Cadell, v. C, 

 late Chief Commissioner of the Andamans, enabled to visit in March 

 and April 1891, in order to investigate their Flora. Narcondam was 

 examined for ten days in the end of March ; after an interval occupied 

 in visiting Little Andaman and the Nicobars,* Barren Island was ex- 

 amined from April 5th to April 8th. 



The volcanic island of Narcondam is situated in the Andaman Sea 

 inLat, 13° 26' N. and Lon. 95° 15' E., 80 miles to the east of Port Corn- 

 wallis in North Andaman, 74 miles north-north-east of Barren Island, 

 150 miles to the south of the nearest point on the coast of Pegu, and 250 

 miles due west of Mergui. The island rises abruptly out of deep water, 

 more especially on its eastern, western and southern sides, to a height 

 of 2330 feet above sea level, and of 8000 feet from the floor of the 

 Andaman sea between it and North Andaman to the west, and between 

 it and Tavoy on the east.f 



The soundings on which the conclusion is based are given in the 

 following table : — 



Table I.J— S 



ounclings in the vicinity 



of Narcondam. 



GENERAL DIRECTION OF 



DISTANCE IN MILES FROM 



DEPTH OF SOUNDINGS IN 



LINE OF SOUNDINGS. 



CENTRAL PEAK. 



FATHOMS. 



E. S. E. 



li 



90 



E. S. E. 



2 



75 



E. S. E. 



2* 



138 



E. S. E. 



H 



284 



E. S. E. 



3| 



333 



E. S. E. 



4| 



486 



E. S. E. 



100 



1050 



S. S. E. 



1* 



242 



s. s. w. 



If 



182 



s. s. w. 



2f 



465 



s. s. w. 



3* 



652 



B. S. W. 



24| 



1010 



* Proceedings of the Asiatic Society of Bengal for 1891 (December), p. 156. 



t Stieler : Hand Atlas, sheet 67 shows depths, which are quite wrong, of 2097 

 and 2200 fathoms to the E. and S. E. of Narcondam ; how these errors have arisen 

 the writer cannot trace. Sheet 58 of the same Atlas gives the true depth. 



% This Table, with the corresponding one for Barren Island, is mainly derived 

 from Mallet and Carpenter, Records of the Geological Survey of India, xx, 46 et 

 seq., with additional soundings from a copy of the Sounding-Book of H. M. I. M, 

 Survey Steamer "Investigator," kindly lent by Dr. Alcock. 



