40 \ Mr. T. G. Bunt on Pendulum Expeninents, 



Table II. — ^Mean hourly rate for every 20° of Azimuth, 



Table III, — Eleven Experiments with Long Intervals. 

 No correction introduced. 



May 23. 



28. 



30. 



31. 



June 2. 



3. 



4. 



5. 



6. 



7. 



245-7 

 130-2 

 118-9 

 127-4 

 110-8 

 121-5 

 102-8 

 283-9 

 165-7 

 701 

 162-5 



49-45 motion. 



23-90 ... 



23-00 ... 



25-75 ... 



21-43 ... 



24-80 ... 



1702 ... 



5813 ... 



32-45 ... 



14-52 ... 



32-18 ... 



1638-5 I 322-63 = ir-814 per hour. 



ijifiii 



All the experiments which I have as yet detailed were made 

 with my leaden ball, of 53^ lbs. weight. I had previously been 

 experimenting with an iron half cwt., of a form nearly cylin- 

 drical ; but finding its motion irregular, I suspected the influ- 

 ence of magnetism and laid it aside. Two days ago I deter- 

 mined to suspend it again, and tiy whether its iiTcgular motion 

 might not have ai-isen from ellipticity, which in my first ex- 

 periments with this weight I had not recorded, or whether it 

 must be assigned to some other cause. The rates of motion 

 I obtained, in inteiTals of about ten or fifteen minutes each, were 

 the following, viz. 



