526 TRANS. ST. LOUIS ACAD. SCIENCE. 



the effect of magnetic brass-work of the magnetometer. This 

 correction is given in the 4th report, p. 472. 



The observations for inclination were not very satisfactory, as 

 the axes of the needles were both bent during the early part of 

 the summer. 



The following observations for meridian, by equal altitudes of 

 the sun, were made. The method of reduction has been ex- 

 plained in previous reports. 



Sun Observations for Meridian. 



Polaris Observations for Meridian. 



Station. 



Daviess Co., Sta. 129 

 Amick's 



Princeton 



Ward's 



Unionville 



Sticklerville 



Harris's 



Lat. 0. 



40° 04' 

 40 ^13 



40 24 



40 27 

 40 29 



40 09 

 39 53 



Alt. h. 



39° 42^-5 

 39 34 -o 

 39 46 -o 



39 58 -o 



40 05 .0 

 40 48 -o 



40 



40 45 -5 



39 37 -o 



39 46 -5 



40 25 .ot 



Polar D./. 



1° 19/. 3 



^ Sum=S. 



40° 32;. 9 



40 33 -I 



40 39 .2 



40 50 .6 



40 54 .2 



41 17 .2 

 41 00 .4 

 41 16 .9 

 40 32 -7 

 40 37 -4 

 40 48 .6 



* The altitudes are all corrected for refraction. 



t This altitude was recorded 40^^ 36'.o. It should have been 40" 26', as was deter- 

 mined at the next station (Shelbyville) by an observation made the same time interval after 

 elongation. 



