450 



CONTENTS. 



Establishment at Supply Bay 451 



Instruments 452 



Clock, Chronometers, and Transit 453 



Transits of Stars ' 454 



Errors and Rates of the Transit-Clock 457 



Altazimuth, and Latitude of Supply Bay 458 



Gunpowder flashes for Longitude 460 



Longitude of Supply Bay 461 



Observations of the Transit of Venus by Lieut. C. Corbet . . , .-. . . 461 



Observations by Lieut. G. E. Coke 462 



Comparisons of Lieut. Coke's Chronometer 463 



Equations derived from the Observations 464 



Plate XVII. to f ace 462 



