1866.] Proceedings of the Asiatic Society. 217 



No. 6. Six specimens of a mixture of gravel and sulphur found 

 in top of Cone. 



No. 7. Crystalized sulphur. 



No. 8. Sulphur as found around fissures near crater. 



No. 9. Several specimens of lava or gypsum, found on top and 

 sides of cone. 



No. 10. Two white masses found in the centre of the crater ; sup- 

 posed to be principally composed of sulphate of lime. 



No. 11. A sample of a red earth found on the Island. 



No. 12. Samples of conglomerate. 



No. 13. Stones thrown up by volcano. 



No. 14. Specimens of shells found on rocks. Shells (excepting the 

 common rock cowrie) were rare, on account of the steep dip of the rocks. 



No. 15. Coral found near hot water springs, having a yellowish 

 colour when taken out of the water. 

 Signed A. Gamseks, M. D. -\ 



Arthur F. Laughton, Lieut. I 



Sub- Assistant Commissary General. ^Members of Committee. 



J. N. HoMFRAY, I 1 



Harbour Master. J 



(Signed) J. H. Fraser, Captain, 

 Port Blair 23rd April, 1866. Assistant Superintendent in Charge. 

 (True Copy) 



W. Ford, Major. 



Supdt. Port Blair. 

 On the invitation of the Chairman, Mr. Medlicott undertook to 

 report upon the specimens forwarded with the Report. 



Mr. D. Waldie read his supplementary note on the composition of 

 the water of the Hooghly. The following is an abstract. 



Mr, Waldie began by reminding the Society that in his paper read 

 at last meeting he had pointed out a very considerable discrepancy 

 between his own results respecting the amount of organic matter in 

 the river water, more particularly during the hot season, and those of 

 the Report to the Municipality then referred to, and it was a matter 

 for consideration how they were to be accounted for or reconciled. It 

 had been suggested that a difference might have been occasioned by the 



