COMPARISON OF BAROMETERS. ` 255 
APPENDIX K-—Continued. 
BAROMETER No, 790—(CISTERN.) 
MEE ae 
Date. | Time. Cor. height. Date. Time, | Cor. height. 
| | 
i Burnet House, Cincin- Rogers Hotel, Fort | 
nati. | Smith, 
Bae TS). 9 | 103 a. m..... 29. 817 Ju. $. Os 14  . 29. 708 
9 2 | 123 p. meci . 196 e TERET p. m...... .691 
۱ OUS ee BE mes 718 i Z 8.35 a. m.... 769 
h b ic = Bo گت‎ . 731 EE... 12.19 p. m... . 760 
E 181 ©. m... .133 
JEROME DANT Ek & m... . 787 
| ھا یہ‎ BRA . 734 
Arkansas Hotel, Na- | 9 De Di m سو‎ . 792 
: | r. n iS L e b 2 
| 8 او‎ 123 p. m...-. 786 
dune ` ._.> ۶۷ jl S ۰ ov 30. 250 e AM SED TN 755 
ds 5.19 p. سب دسالا‎ 770 
کر‎ ESL Pk & ma. 835 
"Ster ا‎ Ii pm... . 136 
Anthony House, Little 和 UT p.m. e . 716 
Rock, chistes | ja 94 . 769 
لہ پوس وی لا‎ TIR EB em 026 . 143 
29. 928 نپ‎ us TI: ere ron . 703 
.910 bee ossi ns] BÀ و تو‎ . 699 
.847 i e ذس سال کا‎ .718 
een ۱ Es ا‎ MON دی‎ 710 
OOH 1 p. M----- ۰ 
.855 1 | n FR s . 638 
. 882 1 رو‎ ad . 696 
| ` AA 133 pi m..... . 690 
 Norz.—Some observations are rejected for Md errors of reading. Such are detected by comparison 
of the Cen instruments at particular observatio: 
Comparisons by J. Green, maker. —Cistern barometer, No. 190, reads Se with standard, 
(Smithsonian); capillary action being corrected by final adinim of scale, (diameter of hubo, 
0.23 inch,) no correction is wanted but in reducing temperature to 32? Fahrenheit. 
SEC EE e RNA 
| | | | | 
CS Place of observation， Date. Instrument observed. |Ther. att. Upper Zeie? DAMM mcd 
S x 1853. 3 = In. In. In. In. 
| E No. 422 Broadway, N. Y., 2d Hoor | Mi e Green's standard 30. 275 
z f James Green’s shop 
x cd ds Do do. do Syphon, No. 780 31.325 | 1.020 | 30.305 | + 0.030 
de Ib o do n's standa ا.----‎ 80. 275 
Ee Do do o Syphon, No. 78 31.330 | 1.052 | 30.278 . 003 
E Do is ۵ reen's standarc --| 30. 108 
Pus Do do o Syphon, No. 78 31.145 | 1.010 | 30. 135 027 
3 : Do do do Green? BORGO oN ee DEER AN 108 
3 Do do do Syphon, No. 782 31. 282 1.162 | 30. 120 012 
Do do do Green's standard . 104 
Do do do Syphon, No. 78 31.574 | 1.449 | 30.125 | + .021 
1854. 
Steamship Oregon, in the harbor | April8, 10 p.m. Spenser and Brown, 87.5 30. 130 
— ndon. 
21 Acapulco, do Syphon, No. 784..... 84 31.456 | 1.368 | 30, ےم ا‎ 4042 
پا‎ April 26, 1 p.m.| Green's standard. .. .. | 69.5 29. 751 
را‎ re tA کرس پر‎ f hon, No. 1845... 71 [31.284 | 1.500 | 29.784 | + 0.027 
As the mean result of comparison of all the instruments at the commencement of the survey, 
the following measures were adopted : 
