Permanence of the Rutherfurd Photographic Plates. 249 



Results op the Measures, Plate 16, Y-coordinate. 

 Date of Measures, 1895, I^6C. 20. 



O / II I II 



Temperature, 66.2, 67.2. Circle right 92 26 22, 26 22. 



Runs, +.0210, +.0210. Circle left 26 22, 26 23. 



Desig. 



Microm. Readings. 





Mean 



Screw 











of 





On Scale. 



Difi. 





and Div. 



Final 



Obs'r. 



Star. 



On 



Star. 







2 



Error. 



Reading. 





1 







Line 



Reading. 













A34,E 



9.0260 



96 



95675 



0.5415 



0.2659 



+.0012 



96.2671 



D. 



W 



9-5195 



96 



10.0415 



0.5220 











E 



9.0290 



96 



9-5735 



0.5445 



0. 2660 



+.0012 



96.2672 



D. 



W 



9-5225 



96 



10.0420 



0-5195 











142 E 



9.0060 



96 



9-5615 



0.5555 



0.2738 



+.0012 



96.2750 



J. 



W 



9-4875 



96 



10.0270 



0-5395 











E 



8.9900 



96 



9-5435 



0.5535 



0.2726 



+.0012 



96.2738 



J. 



W 



9.4700 



96 



10.0070 



0.5370 











i8m,E 



9-0355 



20 



10.1710 



I- 1355 



0.5642 



— .0006 



20.5636 



D. 



W 



9-5095 



20 



10.6310 



1. 1215 











E 



9.0260 



20 



10.1680 



1. 1420 



0.5670 



— .0006 



20.5664 



D. 



W 



9.5100 



20 



10.6360 



1. 1260 











143 E 



9.0020 



20 



10.1445 



1. 1425 



0.5709 



— .0007 



20.5702 



J. 



W 



9.4890 



20 



10.6300 



I.1410 











E 



8.9905 



20 



10.1375 



I. 1470 



0.5709 



— .0006 



20.5703 



J. 



W 



9-5140 



20 



10.6505 



1.1365 











24 J), E 



8.9915 



69 



9. 7080 



0.7165 



0.3524 



+.0040 



69.3564 



J. 



W 



9.4880 



69 



10.1810 



0.6930 











E 



8.9720 



69 



9-6855 



0.7135 



0.3514 



+.0040 



69-3554 



J. 



W 



9-5175 



69 



10.2095 



0.6920 











144 E 



9.0290 



69 



9-7315 



0.7025 



0.3466 



+.0040 



69.3506 



D. 



W 



9-5015 



69 



10.1855 



6840 











E 



9-0235 



69 



9-7235 



0.7000 



0.3439 



+.0040 



69-3479 



D. 



W 



9-5155 



69 



10.1910 



0.6755 











A12, E 



8.9970 



41 



10.8990 



1. 9020 



0.9494 



— .0017 



41.9477 



J. 



W 



9-5215 



41 



II. 4170 



1.8955 











145 E 



9.0200 



41 



10.9095 



1.8895 



0.9430 



— .0017 



41-9413 



D. 



W 



9-5215 



41 



11.4040 



1.8825 











A22, E 



8.9825 



83 



9. 1040 



0.1215 



0.0536 



+.0038 



83-0574 



J. 



W 



9-5035 



83 



9-5965 



0.0930 











146 E 



9.0220 



83 



9-1295 



0.1075 



0.0469 



+ .0038 



83.0507 



D. 



W 



9-5200 



83 



9.6000 



0.0800 











A24, E 



9-0305 



57 



10.2435 



1. 2130 



0.6024 



+.0032 



57-6056 



D. 



W 



9-5285 



57 



10.7250 



1.1965 











147 E 



9-0250 



57 



10.2495 



1.2245 



0.6098 



+ .0032 



57-6130 



J. 



W 



9-4950 



57 



10.7095 



I.2145 











