Permanence of the Rutherfurd Photographic Plates. 225 



Results of the Measures, Plate 18, Y-coordinate (Rev'd). 

 Date of Measures, 1895, Dec. 6. 



Temperature, 63.C, 64.5. Circle right 271° 43 55',' 43 55.' 



Runs, +.0210, +.0190. Circle left 43 20, 43 15. 



Desig. 



of 



Star. 



Microm. Readings. 



Diff. 



Mean 

 2 



Screw 



and Div. 



Error. 



Final 

 Reading. 



Obs'r. 



On 



Star. 



On Scale. 











Line 



Reading. 













A34,E 



9-5130 



35 



10.2610 



0.7480 



0.3758 



+0.0019 



35.3777 



D. 



W 



9-0315 



35 



9-7865 



0.7550 











E 



9-5390 



35 



10.2890 



0.7500 



0.3770 



+0.0019 



35.3789 



D. 



W 



9- 0435 



35 



9-8015 



0.7580 











36 E 



9-5075 



35 



10.2620 



0.7545 



0.3819 



+0.0020 



35-3839 



J. 



W 



8.9860 



35 



9-7590 



0.7730 1 









E 



9-4955 



35 



10.2495 



0.7540 i 0.3800 



+0.0020 



35.3820 



J. 



W 



9-0035 



35 



9-7695 



0.7660 











i8m, E 



9-5440 



III 



9-9330 



0.3890 



0.1999 



— 0.0006 



III. 1993 



D. 



W 



9.0300 





9-4405 



0.4105 











E 



9-4935 





9.8860 



0.3925 



0.2031 



— 0.0006 



I I I. 2025 



D. 



W 



9.0390 





9-4590 



0.4200 











37 E 



9-4905 





9.8800 



0.3895 



0.2045 



— 0.0005 



1 1 1. 2040 



J. 



W 



8.9810 





9-4095 



0.4285 











E 



9.4920 





9.8820 



0.3900 



0. 2028 



— 0.0005 



1 1 1. 2023 



J. 



W 



9.0130 





9-4340 



0.4210 











242), E 



9-5045 



62 



10.2110 



0.7065 



0.3588 



+0.0030 



62.3638 



J. 



W 



8.9980 



62 



9-7265 



0.7285 











E 



9-5015 



62 



10.2085 



0.7070 



0.3595 



+0.0030 



62.3625 



J. 



W 



8-9975 



62 



9-7285 



0.7310 











38 E 



9-5275 



62 



10.2260 



0.6985 



0.3558 



+0.0030 



62.3588 



D. 



W 



9.0225 



62 



9.7470 



0.7245 











E 



9-5015 



62 



10.2080 



0.7065 



0.3582 



+0.0030 



62.3612 



D. 



W 



9-0355 



62 



9.7620 



0.7265 











A12, E 



9-4995 



89 



11.0400 



1-5405 



0.7791 



+0.0008 



89.7799 



J. 



W 



9.0005 



89 



10.5760 



1.5760 











39 E 



9-5230 



89 



11.0560 



1-5330 



0.7734 



+0.0008 



89.7742 



D. 



W 



9.0520 



89 



10.6125 



1.5605 











A22, E 



9.4870 



48 



10.7705 



1.2835 



0.6498 



+0.0002 



48.6500 



J. 



W 



9-0055 



48 



10.3210 



1-3155 











40 E 



9.5010 



48 



10.7795 



1.2785 



0.6494 



+0.0002 



48.6496 



D. 



W 



9.0470 



48 



10.3660 



1.3190 











A24,E 



9.5120 



74 



9.6950 



0, 1830 



0.0958 



+0.0037 



74.0995 



D. 



W 



9.0220 



74 



9.2220 



0.2C0O 











41 E 



9.4970 



74 



9-6995 



0.2025 



0. 1042 



+0.0037 



74.1079 



J. 



W 



9.0000 



74 



9-2145 



0.2145 











