ASTRONOMICAL OBSERVATIONS. 

 APPENDIX A— Continued. 



23 



CAMP C4 A— OCTOBER 14, 1855— Continued. 

 Observer — Lieut. II. L. Abbot, l r . S. Top. Engineers. 



I jeel observed. Tunc of observ'n Observed double 



by cbronometer. ! altitudes. 



a Cor. Borealis. 



Polaris . 



Index error, 

 ter, 41°. 5 



-0' 50". Barometer, 29.5 in. Thermome- 



< AMP G4 A— OCTOBER 16, 1855 

 Observer — Lieut. H. L. Abbot, U. S. Top. Engineers. 



Index error, — 0' 5b". 



CAMP 68 A— OCTOBER 24, 1855. 



Observer — Lieut. H. L. Abbot, U. S. Top. Engineers. 



a Cor. Borealis . 



CAMP 68 A—OCTOBER 24, 1855-Continued. 

 Observer — Lieut. II L. Abbot, U. S. Top. Engineers. 



Object observed. Time ofobserv'n Observed double 



by cbronometer. altitudes. 



Polar 



Index error, — 6' 00". Barometer, 30.0 in. Tliermume- 

 ter, 45°. 



CAMP 69 A— OCTOBER 25, 1S55. 

 Observer — Lieut. H. L. Abbot, U. S. Top. Engineers. 



Lyra) . 



Polai 



Index error, — 5' 20". Barometer, 29.9 in. Tbermome- 

 ter, 50°. 5. 



CAMP 70 A— OCTOBER 26, 1855. 

 OAsfii'cr^Lieut. H. L. Abbot, U. S. Top. Engineers. 



"7 Pefrasi 



nCor. Borealis. 



Polaris. 



