MAGNETICAL OBSERVATIONS. 



47 



STATION No. III. COCOLAPAXI NEAR ORIZABA. 



Time of 1 vibration. Temp. 



August 26. 2 s . 6221 



&quot; 26. .6206 



&quot; 26. .6212 



&quot; 26. .6213 



76.0 

 76.0 

 75.6 

 75.0 



T = 2.6213 



75.6 



No deflections observed. 

 m assumed 0.4942. 



Ilorizoiital intensity, August 26. 

 X = 7.579. 



STATION No. IV. SAN ANDRES CIIALCHECOMULA. 



Time of 1 vibration. Temp. 



September 17. 2 s . 6217 71.9 



&quot; 17. .6220 71.8 



No deflections observed. 

 m assumed 0.4931. 



T = 2.6375 



73.6 



A = 7.522. 



STATION No. VI. CITY op MEXICO. 



Time of 1 vibration. Temp. 



December 10. 2 s . 6321 68.2 



&quot; 10. .6319 68.6 



&quot; 10. .6346 69.5 



&quot; 10. .6337 68.8 



2.6331 



68.8 



Angles of deflection. 

 Distance. u. 



December 10. 1 foot 

 10. 1.3 feet 



7 25 30&quot; 

 3 22 38 



Temp. 

 68.6 



67.9 



Horizontal intensity, December 10. 

 A = 7.576. 



STATION No. VIII. RANCIIO TLAMACAS. 



Time of 1 vibration. Temp. 



Angles of deflection. 



STATION No. I. VEUA CRUZ. 



A. North pole 

 A. South pole 



Mean 



MAGNETIC INCLINATION. 



Needle No. 1. 

 45 O .l 



43 14.0 



Needle No. 2. 



45 44 .8 

 42 15.6 



. 44 7.0 4t 



Resulting dip, August 8, 43 57 .7. 



0.2 



Needle No. 2. 



45 1 .5 



42 30.5 



43 4(i.O 



