Astronomy. 361 



Feb- 6. — The following gentlemen were elected Honorary Members:— S. 

 P. RiGAUD, Esq. A. M. F. R. S. Savilian Professor of Astronomy, Oxford. 

 — G. B. Airy, Esq. Lucasian Professor of Mathematics, Cambridge. — 

 Rev. W. Whewell, M.A.Trinity College, Cambridge. 



The following papers were read. Observations on the formation of Ice 

 in India. By David Scott, Esq. See this Number, p. 216. 



Notice respecting a powerful Aromatic Oil obtained from Malwa in 

 India, from a particular species of grass. 



Mr LizARS exhibited impressions of Engraving on different kinds of 

 paper, including the Nepaul Paper exhibited at last meeting of the Society. 

 Mr L. reported that the coarser kind of Nepaul Paper is well adapted for 

 the purposes of Engraving. 



Feb. 20. — Observations on Street Railways. By Mr Alexander 

 Scott, Ormiston, were read. 



A Description of a Method of cutting leading Screws, exhibited at a for- 

 mer meeting, was read. Drawings of the Apparatus employed were ex- 

 hibited. By Mr J. Clark- 



The Working Model of a Hydraulic Engine by Mr Ruth yen was ex- 

 hibited. 



A Notice regarding the proper forms of Taps and Dies for cutting me- 

 tal Screws. By John Robison, Esq. F. R. S. was read. 



Sir John Seppings was elected an Honorary Member. 



Robert Aytoun, Esq. and James Tod, Esq. were elected joint Secreta- 

 ries of the Society, in room of Dr Turner and Professor Wallace, 

 who retired- 



March 5. — There was read a Notice of the qualities and adaptation of 

 a species of Stone brought from Caithness. Communicated by Sir John 

 Sinclair, Bart. Specimens of the Stone were exhibited. 



The masses of stuff from Nepaul for making paper having now arrived, 

 were exhibited. 



Mr Edward Sacy, Teacher of Mathematics, was elected an Ordinary 

 Member. 



Art. XXII.— SCIENTIFIC INTELLIGENCE. 



I. NATURAL PHILOSOPHY. 

 astronomy. 

 1. Eclipses of Jupiter s Satellites observed at Wilna. By M. Slawinski 

 -The longitude of Wilna is 1^ 41' J 2" east of Greenwich. 



Sidereal time. 



1825, Jan. 17, Im. I. 4^ 0' 23".7 good observation. 

 March 22, Era. II. 8 51 51 .9 very good. 

 April 23, Em. I. 10 44 23 good enough. 

 May 5, Em. I. 12 29 38 .7 very good. 



1826, May 8, Em. J. 15 31 56 .1 middling. 

 June 2, Em. II. 16 46 .1 middling. 



1827, March 18, Im. I. 16 1 14 .9 a little doubtful. 

 April 18, Im. I. 16 46 15 .2 passable. 



