CHAP. XII. J 



LATITUDE BY STARS 



283 



On July 11th, 1879. At Buyuk Chekmejeli A tbe follo\viiig 

 observations were taken. Index error of sextant — 35" 

 Latitude (approx.) 40° 57' 45" N. Longitude 28° 30' E. 

 Mean Time of Transit of star calculated, Xh. 12m. 



Time by watch (Breguet 2086). 



Altitude a Ophiuchi. 



10 09 36 



10 11 



10 42 



11 14 



11 43 



12 09 



12 50 



13 14 



13 38 



14 06 

 14 33 



14 55 



15 16 



15 37 



16 04 

 16 24 



16 50 



17 20 

 17 46 

 38 15 



]\Iean 



123 23 16-7 



