Perinanence of the Rutherfurd Photographic Plates. 217 



Results of the Measures, Plate 18, X-coordinate. 

 Date of Measures, 1895 Nov. 30. 



O I II I II 



Temperature, 57.0, 60.5. Circle right 181 43 28, 43 28. 



Kuns, +.0200, +.0200. Circle left 43 52, 43 50. 



Desig. 



Microm. Readings. 





Mean 



Screw 



Final 









of 

 Star. 



On 

 Star. 



On Scale. 



DiflF. 



2 



and Div. 

 Error. 



Reading. 



Obs'r. 











Line 

 28 



Reading. 













A34,E 



9.0045 



10.3090 



+ 1-3045 



0.7019 



.0000 



29.2019 



D. 



W 



■9-5025 



29 



11.0055 



+ 1-5030 











E 



9.0310 



28 



10.3405 



+1-3095 



0.7019 



.0000 



29.2019 



D. 



W 



9-5150 



29 



II. 0130 



+ 1.4980 











1 E 



8.9990 



28 



10.3290 



+ 1.3300 



0.7106 



.0000 



29.2106 



J. 



W 



9-4785 



29 



10.9910 



+1-5125 











E 



9.0150 



28 



10.3400 



+ 1-3250 



0. 7072 



.OGOO 



29.2072 



J. 



W 



9-4975 



29 



I1.OJ15 



+ 1.5040 











i8m, E 



9.0310 



100 



9.8170 



+0.7860 



0.4325 



+-0003 



ICO. 9328 



D. 



W 



9-5140 



lOI 



10.4580 



+0.9440 











E 



9.0000 



100 



9.7840 



+0.7840 



0.4358 



+.0003 



100.9361 



D. 



W 



9-5190 



lOI 



10.4780 



+0.9590 











2 E 



8.9950 



100 



9-7855 



+0.7905 



0.4401 



+.0003 



100.9404 



J. 



W 



95025 



lOI 



10.4725 



+0.9700 











E 



8.9680 



100 



9-7675 



+0.7995 



0.4426 



+.0003 



100.9429 



J. 



W 



9-4905 



lOI 



10.4615 



+0.9710 











24 i>, E 



9.0010 



65 



10.9950 



+1.9940 



0.541 1 



+.0025 



66.5436 



J. 



W 



9-5005 



67 



9.6710 



+0.1705 











E 



9.0225 



66 



8.9905 



— 0.0320 



0.0350 



+-0049 



66.5399 



J. 



W 



9.4990 



67 



9.6710 



+0.1720 











3 E 



9.0320 



65 



11.0090 



+ 1.9770 



0.5355 



+.0025 



66.5380 



D. 



W 



9-5195 



67 



9.6845 



+0.1650 











E 



9.0190 



65 



10.9985 



+1-9795 



0.5349 



+.0025 



66.5374 



D. 



W 



9-5165 



67 



9-6765 



+0.1600 











A12, E 



8.9990 



71 



10.8450 



+1.8460 



0.4679 



+.0032 



72.4711 



J. 



W 



9.4850 



73 



9-5105 



+0.0255 











4 E 



9.0190 



71 



10.8585 



+ 1-8395 



0.4639 



+-0032 



72.4671 



D. 



W 



9-5215 



73 



9 5375 



+0.0160 











A22, E 



8.9850 



64 



10.8885 



+ 1-9035 



0.4924 



+.0041 



65-4965 



J. 



W 



9-5005 



66 



9-5665 



+0.0660 











5 E 



9-0115 



64 



10.9165 



+1.9050 



0.4946 



+.0041 



65.4987 



D. 



W 



9-5265 



66 



9.6000 



+0.0735 











A 24, E 



9.0470 



63 



10.9510 



'+1.9040 



0.4989 



+.0036 



64.5025 



D. 



W 



9-5050 



65 



9-5965 



+0.0915 











6 E 



9.0450 



63 



10.9480 



+ 1.9030 



0.4979 



+.0036 



64.5015 



D. 



W 



9-4975 



65 



9-5860 



+0.0885, 











