Permanence of the Rutherfurd Photographic Plates. 239 



Results op the Measures, Plate 24, Y-coordinate. 

 Date of Measures, 1895, Dec. 14. 



Temperature, 67.0, 67.0. 

 Runs, +.0180, +.0200. 



Circle right 92 20 31, 20 30. 

 Circle left 20 30, 20 32. 



Desig. 



Microm. Readings. 





Mean 



Screw 



Final 









of 

 star. 



On 



Star. 



On Scale. 



Diflf. 



2 



and Div. 

 Error. 



Reading. 



Obs'r. 











Line 



Reading. 













A34,E 



9.0330 



93 



10.9875 



1-9545 



0.9586 



— .0006 



93-9580 



D. 



W 



9-5225 



93 



11.4025 



1.8800 











E 



9.0140 



93 



10.9680 



1-9540 



0.9592 



— .0006 



93-9586 



D. 



W 



9.5280 



93 



II.4110 



1.8830 











98 E 



8.9865 



93 



10.9610 



1-9745 



0.9660 



— .0006 



93-9654 



J. 



W 



9.4820 



93 



II-3715 



1.8895 











E 



8.9960 



93 



10.9660 



1.9700 



0.9651 



— .0006 



93-9645 



J. 



W 



9.5010 



93 



11-3915 



1.8905 











i8m, E 



9.0265 



18 



9-3995 



0.3730 



0.1692 



— .0004 



18.1688 



D. 



W 



9.5180 



18 



9.8220 



0.3040 











E 



9-0325 



18 



9-4185 



0.3860 



0.1698 



— .0004 



18. 1694 



D. 



W 



9-5170 



18 



9.8100 



0.2930 











99 E 



8.9790 



18 



9-3945 



0.4155 



o.i8i6 



—.0005 



18.1811 



J. 



W 



9-4845 



18 



9-7955 



0.3110 











E 



9.0140 



18 



9-4075 



0-3935 



0.1768 



— .0004 



18.1764 



J. 



W 



9.5010 



18 



9-8145 



0.3135 











24 i>, E 



9-0035 



67 



90335 



0.0300 



0.4961 



+.0037 



66.9998 



J. 



W 



9-5105 



66 



11.4650 



1.9545 











E 



8.9955 



67 



9.0340 



0.0385 



0.4988 



+.0037 



67.0025 



J. 



W 



9-4835 



66 



11.4400 



1-9565 











100 E 



9-0205 



67 



9.0470 



0.0265 



0.4926 



+.0037 



66.9963 



D. 



w 



9-5380 



66 



11.4820 



1.9440 











E 



9-0255 



67 



9.0480 



0.0225 



0.4919 



+.0036 



66.9955 



D. 



W 



9-5240 



66 



11.4690 



1-9450 











A12, E 



8.9845 



39 



10. 2030 



1.2185 



0.5900 



+.0014 



39-5914 



J. 



W 



9-5010 



39 



10.6425 



1.1415 











101 E 



9.0120 



39 



10.2190 



1.2070 



0.5836 



+.0014 



39-5850 



D. 



W 



9-5235 



39 



10.6510 



1. 1275 











A22, E 



8.9980 



80 



10.4615 



1.4635 



0.7110 



+.0020 



80.7130 



J. 



W 



9.4810 



80 



10.8615 



1.3805 











102 E 



9.0250 



80 



10.4810 



1.4560 



0.7059 



+.0020 



80.7079 



D. 



W 



9-5285 



80 



10.8960 



1-3675 











A 24, E 



9.0270 



55 



9-5780 



0.5510 



0.2574 



+.0023 



55-2597 



D. 



W 



9-5095 



55 



9.9880 



0.4785 











103 E 



8.9670 



55 



9-5230 



0.5560 



0.2619 



+.0023 



55-2642 



J. 



W 



9-4895 



55 



9.9810 



0.4915 











