340 Michelson and Morley — Relative Motion of the 



means 0'02 wave-length. The rotation in the observations at 

 noon was contrary to, and in the evening observations, with, 

 that of the hands of a watch. 



Noon Observations. 





16. 



44-7 

 57-4 

 273 

 431 

 "862 

 •706 

 •784 



1. 



44-0 

 57-3 

 23-5 

 41-6 

 •832 

 •692 

 •762 



2. 



43-5 

 58-2 

 22-0 

 41-2 

 •824 

 •686 

 '755 



3. 



39-7 

 59-2 

 19*3 

 39-4 

 •788 

 •688 

 •738 



4. 



35-2 

 58-7 

 19-2 

 3f7 

 •754 

 •688 

 •721 



5. 



34-7 

 60-2 

 193 

 38-1 

 •762 

 •678 

 •720 



6. 



34-3 



60-8 

 18-7 

 37-9 

 •758 

 •672 

 •715 



32-5 

 62-0 

 18-8 

 37-8 

 '756 

 •628 

 •692 



8. 



28-2 

 61-5 

 16-2 

 353 

 •706 

 •616 

 •661 



9. 



26-2 

 63-3 

 14-3 

 34-6 

 •692 



10. 



23-8 

 65-8 

 13-3 

 34-3 

 •686 



11. 



23-2 

 67-3 

 12-8 

 34-4 

 •688 



12. 



20-3 

 69*7 

 133 

 34-4 



•688 



13. 



18-7 

 70-7 

 12-3 

 33-9 

 •678 



14. 



17-5 

 73-0 

 10-2 

 33-6 

 •672 



15. 



16-8 

 70-2 

 7-3 

 31-4 

 •628 



16- 



July 8 . . . . 

 July 9.... 

 JulyU.. 

 Mean 





137 



72-2 



6-5 



30"8 



Mean in w 

 Final mea 



1. 

 n. 



•616 



P. M. Observations. 



July 8 



July9 



July 12 



Mean 



Mean in w. 1. 



Final mean. 



61-2 



63-31 63-3 



68-2 



67-7 



69-3 



70-3 



69-8 



69-0 



71-3 



71-3 



70-5 



71-2 



71-2 



70-5 



72'5 



26-0 



26-0| 28-2 



29'2 



31-5 



32-0 



31-3 



31-7 



33-0 



35-8 



36-5 



37-3 



38-8 



41-0 



42-7 



43-7 



66-8 



66-5 66-0 



64-3 



62-2 



61-0 



61-3 



59"7 



58-2 



55-7 



53-7 



54-7 



55-0 



58-2 



58-5 



57-0 



51-3 



51"9 52'5 



53-9 



53-8 



54-1 



54-3 



53-7 



53-4 



54-3 



53-8 



54-2 



55-0 



56-8 



572 



57-7 



1-026 



1-038 1-050 



1-078 



1-076 



1-082 



1-086 



1-074 



1-068 



1-086 



1-076 



1-084 



1100 



1-136 



1-144 



1-154 



1-068 



1-086J1-076 



1-084 



1-100 



1-136 



1-144 



1-154 



1-172 

















1-047 



1-0H2 1-063 



1-081 



1-088 



1-109 



1115 



1-114 



1-120 

















75-7 

 44-G 

 56-0 

 58-6 

 1-172 



The results of the observations are expressed graphically in 

 fig. 6. The upper is the curve for the observations at noon, 

 and the lower that for the evening observations. The dotted 

 curves represent one-eighth of the theoretical displacements. It 

 seems fair to conclude from the figure that if there is any dis- 



— o-osPu 



-X- 00 o2. 



placement due to the relative motion of the earth and the 

 luminiferous ether, this cannot be much greater than 0*01 of 

 the distance between the fringes. 



Considering the motion of the earth in its orbit only, this 



