ny 



ASTRONOMICAL OBSERVATIONS. 

 APPENDIX A— Continued. 



CAMP 58 A— OCTOBER 6, 1855. 

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



Object obsTved. Time of observ'n Observed double 



by chronometer. ; altitudes. 



Index error, ~\- 0' 50". Barometf 

 ter, 39°. 



26.5 in. Tliermome- 



CAMP 60 A— OCTOBER 8, 1855— Continued. 

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



Object observed. 



Tin e of observ'n Observed double 

 by chronometer. ' altitudes. 



Polaris. 



Altair., 



Index error, -)- 0' 50". Barometer, 28.9 in. Thermorr.e- 

 ter, 430. 



CAMP 62 A— OCTOBER 12, 1855. 

 Observer— Lieut. II. L. Abbot, U. S. Top. Engineer.*. 



n Pegasi. 



Polaris , 



Index error, -j- 1' 20". Barometer, 25.3 in. Thermome- 

 ter, 44°. 



CAMP 64 A— OCTOBER 14, 1855. 

 Observer — Lieut. H. L. Abbot, 17. S. Top. Enginee. 



Pegasi. 



