1850.] 

 Table III. 60.345 



By the Barometer. 

 t + t'— 64\ 



397 



1 ± 



\ 



Table IV. .002695 Cos 2 A. 

 The result of the tables is therefore, 



Difference of \ 6Q345 



level in feet, J 1 ± .002695 Cos 2 A 

 (209 h — 209 h0. 



I ± 



t + t' 64 ^ 



900 ! 



Table I.— ( 



Correction of the Barometer for temperature. 



-5 2 









Barometer Inches. 





















-4-» 



o a> 



« S 



o o 



14 



15 



16 



17 



18 



19 



20 



21 



22 



° a 



a a 





Coi 



rectio 



a to b< 



3 adde 



d to the colder or subtracted 



S+2 C-i 







from 1 



;he warmer Barometer. 





P 







.000 



.000 



.000 



.000 



.000 



.000 



.000 



.000 



.000 







i 



.001 



.002 



.002 



.002 



.002 



.002 



.002 



.002 



.002 



1 



2 



.003 



.003 



.003 



.004 



.004 



.004 



.004 



.004 



.005 



2 



3 



.004 



.005 



.005 



.005 



.006 



.006 



.006 



.007 



.007 



3 



4 



.006 



.006 



.007 



.007 



.008 



.008 



.008 



.009 



.009 



4 



5 



.007 



.008 



.008 



.009 



.009 



.010 



.010 



.011 



.011 



5 



6 



.009 



.009 



.010 



.011 



.011 



.012 



.012 



.013 



.014 



6 



7 



.010 



.011 



.012 



.012 



.013 



.014 



.015 



.015 



.016 



7 



8 



.012 



.013 



.013 



.014 



.015 



.016 



.017 



.017 



.018 



8 



9 



.013 



.014 



.015 



.016 



.017 



.018 



.019 



.020 



.021 



9 



10 



.015 



.016 



.017 



.018 



.019 



.020 



.021 



.022 



.023 



10 



11 



.016 



.017 



.018 



.019 



.021 



.022 



.023 



.024 



.025 



11 



12 



.017 



.019 



.020 



.021 



.023 



.024 



.025 



.026 



.027 



12 



13 



.019 



.020 



.022 



.023 



.024 



.026 



.027 



.028 



.030 



13 



14 



.020 



.022 



.023 



.025 



.026 



.028 



.029 



.031 



032 



14 



15 



.022 



.023 



.025 



.027 



.028 



.030 



.031 



.033 



034 



15 



16 



.023 



.025 



.027 



.028 



.030 



.032 



.033 



.035 



036 



16 



17 



.025 



.027 



.028 



.030 



.032 



.034 



.035 



.037 



039 



17 



18 



.026 



.028 



.030 



.032 



.034 



.036 



.037 



.039 



042 



18 



19 



.028 



.030 



.032 



.034 



.036 



.038 



.040 



.042 



044 



19 



20 



.029 



.031 



.033 



.035 



.038 



.040 



.042 



.044 



046 



20 



21 



.031 



.033 



.035 



.037 



.039 



.042 



.044 



.046 



048 



21 



22 



.032 



.034 



.037 



.039 



.041 



.044 



.046 



.048 



050 



22 



23 



.034 



.036 



.038 



.041 



.043 



.046 



.048 



.050 



053 



23 



24 



.035 



.038 



.040 



.042 



.045 



.048 



.050 



.052 



055 



24 



25 



.036 



.039 



.042 



.044 



.047 



.049 



.052 



.055 



.057 



25 



26 



.038 



.041 



.043 



.046 



.049 



.051 



.054 



.057 



060 



26 



27 



.039 



.042 



.045 



.048 



.051 



.053 



.056 



.059 



062 



27 



28 



.041 



.044 



.047 



.050 



.053 



.055 



.058 



.061 



.064 



28 



29 



.042 



.045 



.048 



,051 



.054 



.057 



.060 



.063 



.066 



29 



3 F 



