18G6.] Proceedings- of the Asiatic Society. 39 



with a sample of the sand referred to in the memorandum of Mr. 

 "Wilson, the Officiating Joint-Magistrate. 



From A Smith, Esq , Magistrate and Collector of Chittagong, to the 

 Commissioner of the Chittagong Division, — (No. 1443, dated the 

 29th December, 1865.) 



Sir,— In my No. 1392 of 18th instant, I had the honor to report to 

 you the occurrence of a series of earthquakes commencing on the even- 

 ing of Friday, the 15th, and extending to the morning of Wednesday, 

 the 20th instant. 



2. The following are, as nearly as possible, the times of occurrence 

 of the most marked shocks, but I fear they must be taken only as 

 approximate, and are not sufficiently accurate to be of any use for scien- 

 tific purposes : — 



1st Friday, December 15th, 6 50 p. m. 



2nd „ „ „ 7-10 „ 



3rd „ „ „ 10-30 „ 



4th Saturday, „ 16th, 2-0 a. m. 



5th „ „ „ 4-0 „ 



6th ,, ,, ,, 6-15 p. m. 



7th „ „ „ 8-40 „ 



8th Monday, „ 18th, 12-0 Noon. 



9th Tuesday, „ 19th, 2-0 p. m. 



10th „ „ „ 10-0 „ 



11th Wednesday,, 20th, 2-0 a. m. 



3. Of these shocks the first was very violent and caused consider- 

 able injuries to several of the masonry buildings in the station. The 

 sixth also was severe ; none of the others were so. 



4. During the time from Friday evening to Sunday morning, there 

 was observed a faint tremulous motion of the earth, and many people 

 counted more shocks than I have enumerated during that period, but 

 those I have given were the most marked and the best authenticated. 

 The doubtful ones have been excluded. 



5. In Thannah Roajan the earth's surface cracked in several places, 

 and poured forth jets of water and a fine dark coloured sand, in appear- 

 ance very much resembling the common medicinal preparation called 

 grey powder. I enclose you a specimen of the sand, which differs in 



