APPENDIX — THE ST. JOHN OBSERVATORY. 265 



The transmitting clock, which was formerly used as a standard 

 sidereal, was made by Emanuel, of London. It has lately been fitted 

 with electric contacts for automatically transmitting time by the 

 electric telegraph. It has a mercurial compensated pendulum, and is 

 enclosed in a similar closet to the one described for the sidereal 

 standard. There is also another mean time clock, with mercurial 

 pendulum and a box chronometer, in the observatory. 



The time ball on the northern tower of the Customs building is 

 dropped by an electric key on the table which contains the electric 

 telegraph instruments. 



D. L. HUTCHINSON, 



Director. 



