OF THE OBSERVATORY OF CAMBRIDGE BY GALVANIC SIGNALS. 



499 



Fourth Set. — Cambridge Signals — {continued). 



Notes to the foregoing Observations. 



No. 11, in D's observation, 32,1 appears to be a mistake for 33,1. 

 No. 40, D's observation is I s in defect, as shewn by B's. 

 No. 48, the seconds of T's observation should probably be 47,6. 

 No. 72, in D's observation, 57,0 appears to be a mistake for 58,0. 



