328 Report of the Kew Committee. 



Vibration Observations for Absolute Measure of Horizontal Force. 



Table I. 



Month. 



a. m. t. 



Tempe- 

 rature. 

 Eahr. 



Time of 

 one 

 Vibration.* 



Log mX. 

 Mean. 



Value 

 of m.f 



1884. 



d. h. m. 



o 



48*1 



sees. 









29 11 25 a.m. 



4-6517 



0*30820 



0*51988 





30 12 29 p.m. 



563 



4-6542 









2 17 p.m. 



57-9 



4-6530 



0*30841 



0*51976 





27 11 44 a.m. 



46-7 



4-6472 









3 51p.m. 



49-3 



4-6473 



0-30906 



0*51979 





29 11 57 a.m. 



39*1 



4*6493 









2 55 p.m. 



403 



4-6458 



0*30850 



0*51948 



1885. 















29 1 50 p.m. 



55-0 



4-6509 



0*30880 



0*51978 



30 32 19 p.m. 



516 



46543 



0*30798 



0*51937 





26 11 52 a.m. 



51-4 



4-6503 







3 6 p.m. 



540 



4-6482 



0-30898 



0*51970 





23 12 10 p.m. 



47*0 



4*6494 









2 10 p.m. 



48-0 



4-6477 



0*30876 



0-51965 





24 12 21p.m. 



49-1 



4-6496 









2 3 p.m. 



516 



4-6498 



0*30870 



0*51970 





27 11 38 a.m. 



64-7 



4-6555 







2 55 p.m. 



71*8 



46552 



0*30875 



0*51971 





28 2 19 p.m. 



74-2 



4-6590 



0*30846 



0*51976 





28 11 12 a.m. 



68-8 



4-6608 







2 55 p.m. 



75-0 



4-6583 



0*30822 



0*51983 





29 2 9 p.m. 



67-5 



4-6566 



0-30850 



0*51926 





29 11 23 a.m. 



63-1 



4-6538 









2 57 p.m. 



72"5 



4*6523 



0-3091 5 



0*51971 





29 11 28 a.m. 



660 



4-6572 







2 56 p.m. 



71-8 



46540 



0*30872 



0*51965 





28 11 20 a.m. 



637 



4-6541 







2 48 p.m. 



668 



4-6563 



0*30859 



0*51955 





28 11 38 a.m. 



55-0 



4-6542 







3 17 p.m. 



61-7 



4-6522 



0*30857 



0*51922 



* A vibration is a movement of the magnet from a position of maximum displace- 

 ment on one side of the meridian to a corresponding position on the other side, 

 f m = magnetic moment of vibrating magnet. 



