MAGNETIC OBSERVATIONS MADE AT PANAMA. 7 



Observations for Magnetic Inclination. 



Needle A. — Stalion, Gorgona, Isthmus of Darien. Instrument, Fox magnetic circle, made by W. George. 

 Observer, A. W. Whipple. Face of instrument, north, needle perpendicular, reading of azimuth circle, 4° 20'. 

 Face of instrument, south, needle perpendicular, reading of azimuth circle, 4° 30'. Reading of azimuth cir- 

 cle, when the vertical circle was in the magnetic meridian, 4° 25'. Date, March 17th, 1849. Weather, 

 clear. Mean time of commencing observations, lO''- 40™- A. M. ; att. Therm. Fahr. 92°.5. Mean time of 

 ending observations, ll""' A. M. ; att. Therm. Fahr. 94°. 



Magnetic inclination by needle A, 31° 16* 15" 



Observation for Total Magnetic Intensity. 



Needle A. — Station, Gorgona. Date, March 17th, 1849. Observer, A. W. Whipple. Weather, clear. 

 Face of instrument, east. Hour of commencing observations, 11''.15. Hour of ending observations, W-.Sb. 



