334 



CAPTAIN SABINE ON THE REDUCTION TO A VACUUM OF 



Great weight uppermost. April 23rd. Clock making 86466.00 vibrations. 



Observers. 





Standard 

 Therm. 



Gauge. 



Times of 



Disapp, Re-app. Coincidence. 



Arc registered 

 and true Arc. 



Mean 

 Interral, 



Correc- 

 tion for 

 Arc. 



Reduc- 

 tion to 

 49°. 



Corrected 

 Vibrations 



at 49°. 



Captain i 



Sabine. ) 



Captain J 

 Sabine. I 



49.5 

 49.'7 



29.604 



29.612 



55 27 

 02 42 

 09 59 

 15 39 

 22 55 

 30 13 



55 39 

 02 55 

 10 13 

 16 09 

 23 30 

 30 49 



I h m s 

 V I 02 49 



17 

 23 12.5 



Div. o 



0.60 = 0.72 



0.15 = 0.18 



^438.484 



+0.29 



+0.26 



86072.15 



49.6 



29.608; Capill. + 0.019; Reduction to 32°- 0.052; =29.575. 



86072.15 



Captain J 

 Sabine.] 



Mr. r 



TAYtoa. ] 



49.6 



48.7 



0.90 



3.30 



18 22 

 25 56 

 33 29 

 28 21 

 35 58 

 43 33 



18 31 

 26 04 

 33 38 

 28 53 

 36 26 

 44 02 



h m s 



3 26 00 



7 36 12 



Div. o 



1.20 = 1.44 



0.25 = 0.30 



^454.91 



+ 1.04 



+ 0.39 



86087.27 



49.15; + Index correction for a rarefied medium 0.75 = 49.9. 



GauM 2.10 



86087.27 



Mr. r 

 Taylor, j 



Mr. f 

 Taylok. ] 



1 



2 



3 



13 



14 



15 



49.6 



48.6 



49.1 



29.640 



29.630 



6 17 

 13 34 

 20 51 

 .33 59 

 41 18 

 48 38 



6 33 

 13 51 

 21 06 



34 24 

 41 44 

 49 04 



h m s 

 8 13 42 



9 41 31.17 



Div. o 



0.98 = 1.176 



0.17=0.20 



M39.1 



+ 0.62 



+0.04 



86072.84 



29.635; Capi"- + 0.019; Reduction to 32° — 0.052; = 29.602. 



86072.84 



The vibrations in these experiments were as follows. 

 With the great weight below : 



April 21. Previous to the vibration in the 1 q JAr'^''"fo ti^..^^ on nnR 



rarefied medium j 86067.18 Barom. 29.596 



April 22. Subsequent to the vibration inlo^^^on^ t. _ onoi^ 



the rarefied medium j 86068.26 Barom. 29.317 



Mean 86067-72 Barom. 29.456 



The vibrations in a rarefied medium reduced "^ 



to the same temperature as those in air > 86082.60 Gauge 1.05 

 of ordinary density J 



Difference 



14.88 



28.406 



