t4 Mr Hunter's Account of' an Improvement on the Odometer. 



tribe of Kungkis, named Bonzhu or Bonjugy. Their prince, 

 by the Bengalese, was named Taibiak ; but whether this was 

 a title, or a proper name, I did not learn. The Saksahs call- 

 ed this chief Taikoup, and said, that he lived on the bank of 

 a small river called Taishang ; but into what great river this 

 falls I was not informed. A branch of the Kazalung has in- 

 deed this name ; but all that vicinity is occupied by the tribe 

 Lusai. The Saksahs indeed pretend, that the Lusai also are 

 subject to this prince ; but this was denied by the Tripuras, 

 and all the incursions of the Bonjugies of which I heard came 

 from the south-east side of the Karnaphuli, while the Kazalung 

 is towards the north-west; and, so far as I can judge, the 

 former seems to be the boundary between the two tribes. 



Akt. VI. — Account of an Improvement on the " Odometer" 

 which, witlwut increasing its size, multiplies its power up- 

 wards of One Hundred Fold. By James Hunter, Esq. 

 of Thurston, F.R. S.E. Communicated by the Author. 



lo those who are unacquainted with this small but useful in- 

 strument, it may be necessary to explain, that it is calculated, 

 by its lightness, to supersede the use of the Perambulator, 

 being easily driven by one hand, while the Perambulator is 

 with difficulty managed with both. 



The Odometer consists of a perpetual screw, which 

 turns two concentric wheels of 100 and 101 teeth respectively. 

 It must be evident, that, when the wheel of 100 teeth C 

 lias completed one revolution, the other wheel of 101 teeth B 

 will have one tooth remaining unturned. Consequently, an 

 index placed at or zero of C, will point to 1 of B ; 

 which 1, therefore, indicates a complete revolution of C, or 

 100 turns of the perpetual screw, which, being fixed to the 

 measuring-wheel, is equivalent to 100 times the circumfer- 

 ence of the measuring- wheel. After a second revolution, it 

 will point to 2 of B, showing two revolutions of C, or 200 

 turns of the measuring-wheel, and so on until it points to 

 or 101 of B, having completed 101 revolutions of C, 

 or 10,100 turns of the mcasuring-whcel. 



