MECHAmOAL CONNEXION BETWEEN ETHER AND MA.TTER. 
161 
Fig. 5. 
Shift. 
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-4X 
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y 
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N 
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l\ 
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1 A’ 
2^ 
-1 
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5,000 ^.OOO /,OCO O 1.000 ^000 60)00 
Reoer^sd Speed. Speed = per m/nute. 
Details of one of the larger spurious shifts of the middle band, as observed before the brick pier 
supports of the optical frame had been properly overhauled. 
The dots represent individual settings and readings of the micrometer cross wire set on the middle 
band during a pair of spins in opposite directions, while the speed was first increasing and then 
decreasing. 
Fig. 6. 
A . 
— 
i 
\ 1 
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\ N 
1 \ 
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1 
•v 
./ 
/ 
/ 
/ i 
/ 
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t ! 
V 
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/■' i 
A 1 
1 
N 
c 
5.000 2pOO /.OOO O /poo 2,000 5,000 
dei/ersed Speed. Speed=deiro. per m/nuCe. 
Corresponding concertina action (on same scale), or change in the breadth of the bands during the 
above spurious shift. Dots represent diffei’ences between the readings of a micrometer wire set 
on the yellow of the 1st order and the readings of the cross wire set on the middle band. The 
zero of the vertical scale is far below, 7 squares below 0. At that distance this figure may be 
placed above fig. 5. 
MDCCCXCVII,— A, 
Y 
