AND THEIR CONNECTION WITH MAGNETIC CHANGES. 



357 



TABLE I. — Observations during Magnetic Calms. 







Time. 



Column 1. 



Column 2. 



Column 3. 



Date. 



Dover — London, u.* 



Tonbridge — London, u. 



Dover — Tonbridge, u. 







London — Dover, d. 



London — Tonbridge, d. 



Tonbridge — Dover, d. 



1861. 





o 



o 



o 



October 1 



9.31 A.M. 



16 u 



6 d 



14 u 





11.42 ... 



15 u 



35 d 



30 u 







2.20 P.M. 



4 u 



36 d 



... 







2.35 ... 



3 u 



28 d 







2 



2.15 ... 



17 u 



35 d 



20 u 









2.47 ... 



















3.20 ... 



6 u 



28 d 



18 u 





3 



5.20 ... 



19 d 



3d 



20 d 



' 





10.12 - 



20 u 







20 u 





4 



6.25 A.M. 



33 d 



3 u 



45 d 







12.24 P.M. 



35 u 



29 d 



50 u 







12.26 ... 



40 u 



55 u 



50 u 







4.50 ... 



10 d 



20 d 



2 d 1 





8 



11.0 A.M. 



20 d 



10 d 



31 d 





9 



6.20 ... 



12 u 



20 d 



25 u 







9.20 ... 



35 d 



25 u 



35 d 





10 



6.58 ... 



10 u 



15 d 



20 u 





14 



2.16 PM. 



10 u 



12 d 



lid 







2.45 ... 



5 u 



25 d 



15 u 





.'. 15 



11.34 A.M. 



20 u 



40 d 



32 u 







12.19 P.M. 



18 u 



16 d 



25 u 







2.30 ... 



2 u 



15 d 



7u 







3.25 ... 



10 d 



4u 



15 d 







7.16 ... 



20 u&d 



5 u 



40 to 60 d 





'.'. 17 



10.52 A.M. 



23 u 



10 d 



30 u 







11.25 ... 



20 u 



25 d 



38 u 







11.43 ... 



26 u 



26 d 



40 u 







2.13 P.M. 



20 u 



18 d 



35 u 







3.41 ... 



10 u 



20 d 



15 u 







5.6 ... 



10 d 



15 d 









.. 18 



10.58 AM. 



14 u 



10 d 



28 u 







11.37 ... 



24 u 



10 d 



34 u 







12.30 P.M. 



40 u 



30 d 



48 u 







2.44 ... 



22 u 



18 d 



34 u 







3.39 ... 



15 u 



12 d 



16 u 





19 



12.1 ... 



12 u 



40 d 



45 u 





.. 21 



7.7 A.M. 



5d 







35 d 







10.10 ... 



28 d 



15 u 



32 d 







1.42 PM. 



50 u 



10 d 



50 u 







2.56 ... 



43 u 



15 d 



47 u 





22 



6 15 A.M. 







5d 



2u 







7.15 ... 



5d 







25 d 





23 



7.0 ... 



5d 















1.45 P.M. 



40 u 







45 u 







3.9 ... 



45 u 







50 u 





.. 24 



6.20 A.M. 







7d 



7u 









7.5 ... 











2u 





26 



12.19 PM. 







10 u 











1.10 ... 



20 u 



20 d 



26 u 









41 ... 







5 d 







* Dover — London, u, means that a stream of positive electricity is travelling (to us^ railway 

 inguage) up from Dover to London, and a similar rule applies to the other headings. 



