244 Permanence of the Rutherfard Photographic Plates. 



Results of the Measures, Plate 24, Y-co6rdinate (Rev'd). 

 ( Continued). 



Desig. 



of 

 Star. 



Mlcrom. Readings. 



Difif. 



Mean 

 2 



Screw 



and Div. 



Error. 



Final 

 Reading. 



Obs'r. 



On 

 Star. 



On scale. 



Line 



Reading. 



A28,E 

 W 



122 E 

 W 



A30,E 

 W 



123 E 



W 



A39,E 

 W 



124 E 

 W 



9-5225 

 9-0430 

 9.4840 

 9-0195 



9-5155 

 9-0195 

 9.4.990 



9-OI35 



9-5405 

 9.0205 

 9-5270 

 9.0240 



16 

 16 

 16 

 16 



48 

 48 

 48 

 48 



89 



89 

 89 



10.0600 



9-6635 



10.0425 



9.6425 



9.8310 

 9.4080 

 9.8105 

 9-4015 



11-2545 

 10.8010 

 11.2490 

 10.8260 



0.5375 

 0.6205 



0-5585 

 0.6230 



0.3155 

 0.3885 



O.3115 

 0.3880 



I.7140 

 1.7805 

 1.7220 

 1.8020 



0.2895 

 0.2954 



0.1760 

 0.1749 



0.8736 

 0.8810 



+.0002 

 +.0002 



+.0016 

 +.0016 



+.0006 

 +.0006 



16.2897 

 16.2956 



48.1776 

 48.1765 



89.8742 

 89.8818 



D. 

 J. 



D. 



J. 



D. 



J. 



