1836.] 



Distance of objects at sea. 



57 



was murdered A. H. 993, after a reign of a little more than 

 8 years. 



16. (a) Saltan Buyong. A. H. 993. After a reign of 

 | °arly 3 years, this prince was murdered A. H. 998, on the 

 17th of the month Zualkaideh on Tuesday. 



17. (b) Sultan Ala-uddin Riayet Shah. A. H. 996. 

 Reigned 15 years, 10 months and 28 days— was deposed by 

 his own son, Sultan Muda, who succeeded him A. H. 101 Ij, 

 by the title of Sultan Ali Moghayet Shah. 



/ To be continued. J 



VIII. — Remarks on the method of estimating the distance 

 at Sea, from objects of known height.— By C„ 



To the Editor of the Madras Journal 



of Literature and Science. 

 Sir,— In forwarding to you the paper upon the estimation 

 of distance at Sea, published in the 9th No. of your Journal, 

 I did not think it necessary to give such a modification of 

 Lieutenant Raper's formula, that the computation might be 

 effected without using logarithm to seven .places, but as it 

 may be of some use, I subjoin the investigation. 



bound, prepared to attack the Portuguese in Malacca, and sailed there with a nu- 

 merous fleet, in which were 15,000 of his own subj ects, 400 Turks, with 200 pieces 

 of artillery of various sizes. After several furious attacks on the place the 

 A Chinese were compelled to raise the siege, leaving 3000 slain before the walls. 

 Mansur Shah besieged Malacca during his active reign no less than five times, 

 with the same results ; being always foiled by the desperate valour of the Portu- 

 guese. Mr. Marsden justly observes, " It is -difficult to determine which of th<* 

 two is more astonishing, the vigorous stand made by such a handful of men as the 

 whole strength of Malacca consisted of, or the prodigious resources and persever- 

 ance, of the Achinese monarch," 



Mansur Shah was murdered by his general Moratiza, together with his queen 

 and many of the principal nobility on the 17th day of the month Mohurrum. 



(a ) Buyong, or the boy, was the son of the only daughter of Mansur Shah, by 

 the king of Johor whom she had married. 



Moratiza, afterwards Sultan Ala-uddin Riayet Shah, after murdering Buyong's 

 father Mansur Shah, took charge of the boy during his minority ; but, ambition 

 prevailing, he despatched him also and assumed possession of the throne. 



(b ) During the reign of this monarch Sir James Lancaster arrived at Achin, 

 as ambassador from Elizabeth of England, with the first English fleet that had 

 appeared in these seas, and concluded a commercial treaty with the Sultan, 



