Permanence of the Rutherfurd Photographic Plates. 229 



Results op the Measures, Plate 22, Y-co6rdtnate. 

 Date of Measures, 1895, Dec. 9. 



O I II t It 



Temperature, 59.0, 63.5. Circle right 91 27 56, 27 55. 



Runs, +.0180, +.0200. Circle left 27 56, 27 55. 



Desig. 



Microm. Readings. 





Mean 



Screw 



Final 









of 

 Star. 



On 



Star. 



On Scale. 



Difif. 



2 



and Div. 

 Error. 



Reading. 



Obs'r. 











Line 



Reading. 













A34,E 



9.0320 



93 



9.0705 



0.0385 



0.0222 



+0.0019 



93.0241 



D. 



W 



9.5220 



93 



9-5725 



0.0505 











E 



9.0340 



93 



9.0740 



0.0400 



0.0229 



+0.0019 



93.0248 



D. 



W 



9-5225 



93 



9- 5740 



0.0515 











54 E 



8.9920 



93 



9-0350 



0.0430 



0.0254 



+0.0020 



93.0274 



J. 



W 



9-4955 



93 



9-5540 



0.0585 











E 



9.0010 



93 



9-0475 



0.0465 



0,0258 



+0.0019 



93.0277 



J. 



W 



9-5030 



93 



9-5595 



0.0565 











i8m, E 



9.0615 



17 



9-5885 



0.5270 



0. 2600 



— 0.0008 



17.2592 



D. 



W 



9-5305 



17 



10.0435 



0-5130 











E 



9-0445 



17 



9-5705 



0.5260 



0.2596 



— 0.0007 



17.2589 



D. 



W 



9-5075 



17 



10.0200 



0.5125 











55 E 



8.9685 



17 



9.5070 



0.5385 



0.2646 



— 0.0007 



17.2639 



J. 



W 



9-4835 



17 



10.0035 



0.5200 











E 



8.9725 



17 



9-5185 



0.5460 



0.2682 



— 0.0007 



17.2675 



J. 



W 



9.4810 



17 



10.0080 



0.5270 











24 jp, E 



8.9780 



66 



9.1230 



0.1450 



0.0745 



+0.0058 



66.0803 



J. 



W 



9-4790 



66 



9.6320 



0.1530 











E 



8.9855 



66 



9.1310 



0.1455 



0.0732 



+0.0058 



66.0790 



J. 



W 



9-4975 



66 



9.6450 



0.1475 











56 E 



9.0160 



66 



9-1545 



0.1385 



0.0709 



+0.0058 



66.0767 



D. 



W 



9-5130 



66 



9.6580 



0. 1450 











E 



9-0340 



66 



9.1710 



0.1370 



0.0702 



+0.0058 



66.0760 



D. 



W 



9.5080 



66 



9.6520 



0.1440 











Ai2,E 



9.0060 



38 



10.3475 



1-3415 



0.6685 



+0.0002 



38.6687 



J. 



W 



9.4980 



38 



10.8305 



1-3325 











51 E 



9-0315 



38 



10.3695 



1.3380 



0.6675 



+0.0002 



38.6677 



D. 



W 



9-5320 



38 



10.8640 



1.3320 











A 22, E 



8.9995 



79 



10.5745 



I-5750 



0.7872 



+0.0018 



79-7890 



J. 



W 



9-5075 



79 



II. 0815 



1.5740 











58 E 



9.0360 



79 



10.5975 



1-5615 



0.7820 



+0.0018 



79.7838 



D. 



W 



9-5305 



79 



11.0970 



1-5665 











A24,E 



9.0425 



54 



9.7025 



0.6600 



0.3309 



+0.0031 



54.3340 



D. 



W 



9-5160 



54 



10.1795 



0.6635 











59 E 



9.0130 



54 



9-6855 



0.6725 



0.3374 



+0.0030 



54.3404 



J. 



W 



9.4825 



54 



10.1595 



0.6770 











Annals N. Y. Acad. Sci., IX, October, 1896.— 16. 



