127 



lute places of all stars which have been used by those gentlemen in 

 differential measuroniciits ; the want of some establishment to which 

 private observers might send for the determination of their stars of 

 reference, having long been a matter of regret. 



In conclusion, the author alludes to the various foreign observa- 

 tories, whose subjects of observation will, he thinks, by no means 

 interfere with that selected for Edinburgh ; and he congratulates 

 himself that having made his election entirely on independent physi- 

 cal considerations, he has at last arrived at the same point to which 

 his predecessor seemed to be drawing nearer and nearer every year. 



2. Observations of Terrestrial Temperature made at Trevan- 

 drum Observatory, from May 1842 to December 1845. 

 By John Caldecott, Esq. Communicated by Professor 

 Foi'bes. 



This paper is a continuation of the Register of Observations al- 

 ready recorded at page 29 of this volume of the " Proceedings." 

 The following table contains the mean corrected results of the ob- 

 servations at 3, 6, and 12 French feet, and of the temperature of the 

 air for 1843, 1844, and 1845 taken together: — 



