54 INDEX CATALOGUE. 



Schroeter : Beytrage z. d. neuesten astron. Entdeckungen. iv vols. 1788- 

 1800, 8vo., plates. [Nebula of Orion and nebula in Lyra, etc.] 



: Aphroditographische Fragmente, 1796, p. 248. [Has a chart of 



Nebula Orionis and a m?moir on the nebula.] 4°. 



: B. J., 1797, p. 198. [Detailed observations of the nebula of Orion.'] 



: B. J., 1801, p. 128. [Announces changes in nebulae of Orion and 



Lyra.] 



Schubert: B. J., 1805, p. 135. [To determine the relation between the 

 mean distance (=: 1) of neighboring stars of a cluster, and the 

 radius of a sphere (= r) which shall contain n stars equally 

 distributed.] [See Stetjve, W., Etudes d'Ast. Stell., notes p. 

 16.] 



Schultz, H. : Beob. auf d. Sternwarte zu Upsala, 1862-63. 8vo. 



: Mikrometrisk Bestamning af 104 sternjor inom teleskopiska stjern- 



gruppcn 20 Vulpeculce, 4°, Stockholm, 1873. K.. Svenska. vet. 



Acad. Handlingar, vol. xxi, No. 3. 

 : Micrometric observations of 500 nebula?. Mem. R. S., Upsala, 



vol. ix, 1874, 4°. 

 : Om Komparations-sljernorna vid nebulos-observa. i Upsala, 1875. 



K. Svenska vet. Acad. Handlingar, vol. ii, No. 16. 



: Upsala Univ. Arsskr., 1864. 



: V. J. S., 1876, p. 73. [Personal differences in observations of 



nebulas.] 

 : A. N., lxiii, col. 243. [Constant differences in observations of 



nebula? by various observers.] 



: A. N., lxv, cols. 65 and 297. [Observations.] 



: A. N , lxv., col. 315. [Kemarks on variable nebula?, G. C. 1707, 



4760.] 

 : A. N., lxvi, col. 47. [Remarks on errors in observation of M. 92, 



and h. 445.] 



: A. N., lxvii, col. 1. [Historical note on nebula?.] 



: A. N., Ixx, col. 135. [Corrections to Heeschel's General Cata- 

 logue.] 

 : A. N., lxxx, col. 21. [Micrometric observations of H. viii, 20 = 



20 Vulpeculce.] 

 : [On nebula? Baily-Lalande, 14,512, and 45 H. iv, Qeminorum.] 



Hon. Not. R. A. S., xxv, 189-91. 



: A preliminary Catalogue of nebula? observed at Upsala. Mon. 



Not. R. A. S., xxxv, p. 135. 



Schumacher: A. N., v, col. 282. [On Cacciatoee's new nebula.] See 

 Zach., Mon. Corr., 14, p. 409. 



