68 INDEX CATALOGUE. 



Struve, 0. : V. J. S., 1870, p. 25. [Review of the Memoir of Lord Eosse.] 



Struve, W. : Rapport sur les observations cle Ltaponoff sur la nebuleuse 

 A'Orion. Bull de la Classe Phys.-Math., vol. xii, p. 31G, and 



Melanges Math., ii, p. 45. 



: Catal. Nov. Stell. Duplic, 1827, p. xiv. [Discovery of 5th star 



in trapezium.] 



Tcmpel: A. N, lviii, col. 240. [Drawing.] 



: A. N., lxxx, col. 29. [Trapezium.] 



: Unpublished drawing, made in 1876. 



Tisseraild : Bull. Inter. Obs. Paris, 187G, No. 119, also C. R., Ixxxi, April 

 17, p. 891. 



Trouvelot : Annals Harv. Coll. Obs'y, vol. viii. [Drawing.] 



: Wash. Ast. Obs., 1874, Appfendix I, plate vi, fig. 4. [Drawing.] 



Vico : See De Vico. 



Vogel, H. C, : A. N., lxxviii, col. 245. [Spectrum.] 



Von Hahn : B. J., 1797, p. 157. 



: B. J., 1799, p. 235. 



Webb: Intellectual Observer, vol. xii, p. 258. [History.] 



: Mon. Not. R. A. S., xxvi, p. 208. [Account of his drawings and 



observations.] 



Winlock : Astronomical Engravings from the Observatory of Harvard 

 College, plate 24. [Drawing of central part, by Trouvelot.] 

 See Annals Harv. Coll. Obs., vol. viii. 



Winnecke : Melanges Math., iii, p. 499, and Bull, de I'Ac. Imp., vii, p. 18. 

 : Mon. Not. R. A. S., xxiv, p. 7. [New stars.] 



Wolf, R. : J. B. Cysat von Luzern, 1853. 

 : A. iV., xxxviii, col. 109. 



