7 12 255.992 75 256.112 0.20
8 11 255.992 76 256.124 0.03
9 11 255.888 81 256.080 0.13
10 13 255.878 81 256.070 0.13
-------
Mean = 256.094



Effect of Support and of Scraping.


The standard Vt₃ fork held in its wooden support was compared with
another fork on a resonator loaded with wax and making with standard about
five beats per second. The standard was free from the cylinder. The beats
were counted by coincidences with the ⅕ second beats of a watch.


_Specimen._

Coincidences were marked--

At 32 seconds.
37 seconds.
43.5 seconds.
49 seconds.
54.5 seconds.
61.5 seconds.
61.5 - 32 = 29.5.
29.5 ÷ 5 = 5.9 = time of one interval.