334 



PROCEEDINGS OF THE AMERICAN ACADEMY 



MEAN RIGHT ASCENSIONS FOR 1883.0. — Continued. 



ScinvERD 529. 



1882, Nov. 10 s. p. 



15 s. p. 



16 s. p. 

 18 s. p. 



1883, April 2 



6 

 9 

 10 

 Mean A. R. 1883.0 



tn. 



38 



31.88 

 31.42 

 31.78 

 31.04 

 31.44 

 31.81 

 32.12 

 31.92 

 8 38 31.751 



SCHWERD 533. 



1882, Oct. 30 s. p. 

 Nov. 4 s. p. 



6 s. p. 

 8 s. p. 



1883, Mar. 23 



24 

 29 

 April 2 

 Mean A. R. 1883.0 



ni. 

 41 



8 41 



Radcliffe 2218. 



1882, Oct. 7 s. p 



13 s. p 



14 s. p 

 Nov. 6 s. p 



8 s. p 



1883, Mar. 29 

 April 2 



6 

 9 

 Mean A. R. 1888.0 



h. m. 

 8 50 



8 50 



s 

 15.51 

 15.31 

 15.99 

 16.05 

 15.83 

 15.80 

 16.18 

 15.89 

 15.820 



43.89 

 44.22 

 43.48 

 43.90 

 44.00 

 44.10 

 44.24 

 44.77 

 44.21 

 44.090 



Groombriuge 1480. 



1883, April 10 



13 



14 



17 

 Mean A. R. 1883.0 



h. m. R. 



8 53 38.52 

 38.57 

 39.25 

 8872 



8 53 38.765 



ScinvERD 587. 



1833, April 2 

 14 

 17 



17 s 

 27 s 

 29 



Oct. 

 Nov. 



P- 



s. p. 

 s. p. 

 Mean A. R. 1883.0 



h. m. 8. 

 9 44 41.06 



41.77 

 40.80 

 41.12 

 41.40 

 41.52 

 9 44 41.278 



Radcliffe 2104. 



1883, Mar. 20 



22 

 April 2 



10 

 Oct. 17 s. p. 

 Nov. 27 s. p. 



28 s. p. 



29 s. p. 

 Mean A. R. 1883.0 



h. m. s. 



9 49 40.32 

 39.82 

 40.19 

 40.32 

 40.64 

 39.76 

 40.86 

 40.47 



9 49 40.360 



Radcliffe 2407. 



1883, Mar. 20 



April 2 

 17 



Oct. 17 s. p. 

 Moan A. R. 1883.0 



h. m 



9 58 



9 58 



13.82 * 



11.63 



11.83 



13.55 



12.708 



Camelopardali 29 H. 



1882, Oct. 

 Dec. 



1883, Mar. 



13 s. p. 

 9 s. p. 

 12 s. p. 

 20 



h. m. 



10 12 



April 14 



17 



Oct. 



Nov. 



17 s. p. 



27 s. p. 



28 s. p. 

 Dec. 3 8. p. 



6 s. p. 

 Mean A. R. 1883.0 



10 12 



28, 



26 



26 



27 



26. 



26. 



27 



27. 



26 



27 



26. 



26 



26 



121 



46 



76 



34 



47 



99 



07 



08 



29 



01 



86 



26 



892 



* Tliis ?t;ir. a close pol.ir. w.is oli.scrTed with the micrometer: and for this date the micrometri- 

 cal Zpr(i-]i(iiiit is ;ipp:irciitly ill-dcti-niiiiu'd 



t Tliis (iliservatioii is (iis(rc|);int, (iroljulily owing to a change in tlie position of the instru- 

 nii'iit , tint the seeing w.ts .-ilso very bad, .-itid I have retained it iiiudiangi'd for uniformity's sake, 

 Icavim; any correction to a Hnal discu.xsioi! of a few suspected evoninj^s. As soon as nearly final 

 ri^jht-asccnsions of all (he stars observed on this date sliall be ready, it will lie possible to follow 

 the changes in the v.ilue of n from l.Si'.S to 22''. .3 siilereal time, and dci-ide whether the dis- 

 crepancies in this quantity are accirlental or prostre.ssive ; at present Ccphci 01 II. s p gives 

 n + c=^l<!U!»; Oameloiur.lili .3'J II. s. p. -f 2< 11.3. 1 had attributed the dilTercnce to the 

 wretched seein;' in assi^iiiii;; the mean, and so reduced all the ob-crv.ili iii.>. 



