ON THE RATE OF A CLOCK OR 



CHRONOMETER AS INFLUENCED 



BY THE MODE OE SUSPENSION 



fr/X4 r a Paper read before the Institution of Engineers 

 in Scotland, Fclntary 27, 1867.] 



IT is well known that the rate of a chronometer, 

 a clock, or a watch may be altered by altering its 

 mode of support. On land, clocks ought to be 

 fixed in as solid a manner as possible, so as t<> 

 prevent vibration, cither by their own action or 

 from extraneous causes, from being communicated 

 to the supports of the pendulum. Even the best 

 astronomical clocks hitherto made arc not well 

 arranged in this respect. 



A marine chronometer or watch exhibits in a 

 very striking manner the effects of varying the 

 mode of support. A watch which keeps very good 



