Meteorological Observa lions. 



Hi 



Abstract of the Results of the Hourly Meteorological Observations 



taken at the Surveyor General's Office, Calctitla, 



in the month of July 1870. 



Latitude 22° 33' 1" North. Longitude 88° 20' 34" East. 



Height of tlie Cistern of the Standard Barometer above the sea level, 18.11 feefc. 



Daily Means, &c. of the Observations and of the Hygroinetrical elements 

 dependent thereon. 







Range of the Barometer 



15 ft Range of the Tempera- 





be g ^ 



duri 



ng the day. 





ture during the day. 



Date. 

















ri w« 









£ % 











g a;^ 



Max. 



Min. 



Diff. 



z% 



Max. 



Min. 



Diff. 













^ 











Inches. 



Inches. 



Inches. 



Inches. 







o 







o 



1 



29.617 



29.672 



29.540 



0.132 



85.4 



91.0 



80.5 



10.5 



2 



.550 



.597 



.471 



.126 



85.6 



91.0 



81.5 9.5 



3 



.514 



.566 



.482 



.084 



84.6 



89.7 



82.3 



7.4 



4 



.597 



.645 



.560 



.085 



83.2 



88.2 



79.5 



8.7 



5 



.642 



.689 



.589 



.100 



83.9 



89.2 



80.5 



8.7 



6 



.632 



.679 



.575 



.104 



85.5 



90.8 



81.7 



9.1 



7 



.597 



.634 



.533 



.101 



85.1 



90.5 



81.5 



9.0 



8 



.596 



.661 



.551 



.110 



84.5 



88.0 



82.5 



5.5 



9 



.639 



.693 



.588 



.105 



82.3 



86.0 



78.8 



7.2 



10 



.639 



.695 



.570 



.125 



83.3 



87.6 



80.2 



7.4 



11 



.609 



.673 



.533 



.140 



84.5 



91.1 



80.0 



11.1 



12 



.569 



.618 



.502 



.116 



85.8 



92.2 



80.5 



11.7 



13 



.508 



.557 



.433 



.124 



85.9 



92.0 



81.0 



11.0 



14 



.458 



.505 



.389 



.116 



86.6 



93.7 



81.5 



12.2 



15 



.458 



.506 



.384 



.122 



85.7 



91.0 



82.0 



9.0 



16 



.457 



.495 



.401 



.094 



83.9 



90.0 



80.8 



9.2 



17 



.486 



.552 



.439 



.113 



84.1 



89.4 



80.8 



8.6 



18 



.507 



.555 



.440 



.115 



84.8 



89.0 



81.2 



7.8 



19 



.484 



.534 



.413 



.121 



85.5 



90.8 



81.7 



9.1 



20 



.441 



.493 



.372 



.121 



83.9 



89.9 



81.2 



8.7 



21 



.479 



.523 



.440 



.083 



82.8 



88.2 



80.0 



8.2 



22 



.513 



.557 



.467 



.090 



82.5 



90.1 



97.9 



10.2 



23 



.542 



.587 



.491 



.096 



83.1 



89.5 



79.0 



10.5 



24 



.520 



.559 



.450 



.109 



82.3 



86.0 



80.3 



5.7 



25 



.488 



.541 



.430 



.111 



81.2 



84.0 



80.0 



4.0 



26 



.459 



.500 



.401 



.099 



82.0 



86.2 



78.8 



7.4 



27 



.446 



.511 



.396 



.115 



80.7 



85.5 



78.7 



6.8 



28 



.477 



.513 



.421 



.092 



83.3 



89.5 



78.6 



10.9 



29 



.461 



.505 



.381 



.124 



84.0 



89.5 



81.0 



8.5 



30 



.414 



.457 



.355 



.102 



83.5 



90.5 



80.5 



10.0 



31 



.382 



.482 



.324 



.158 



80.9 



83.9 



78.5 



5.4 



The Mean Height of the Barometer, as likewise the Dry and Wet Bulb 

 Thermometer Means are derived, from the hourly observations, made at the 

 several hours during the day. 



