488 General Monthly Meeting. [March 1, 



of the earth ; and when restricted to one plane it acts as a magnetic 

 needle without magnetism, or spontaneously rotates in parallelism 

 with the earth. To these remarkable, diversified, and somewhat 

 paradoxical applications, we have now added another of far higher 

 utility, tha;t it gives perfect stability for the nicest astronomical 

 observations on board a ship, pitching and tossing with every wave 

 and gust of wind. 



[Besides models, illustrative of the principle, the actual instru- 

 ments were exhibited by Prof. C. P. Smyth.] 



[B.P.] 



GENERAL MONTHLY MEETING, 



Monday, March \, 



William Pole, Esq. M.A. F.R.S. Treasurer and Vice-President, 

 in the Chair. 



Edward Levi Ames, M.A. 

 Herbert Barnard, Esq. 

 George Bishop, jun., Esq. 

 John Ashton Bostock, Esq. 

 S. M. Boulderson, Esq. 

 Edward Hay Currie, Esq. 

 William Day, Esq. 

 Alfred Hamilton, Esq. 

 Joseph Haynes, Esq. 

 Stanley Haynes, Esq. 



Alfred Gutteres Henriques, Esq. 

 Thomas Hyde Hills, Esq. 

 William Longman, Esq. 

 Mrs. Lyon Playfair. 

 Sir James P. Kay Shuttleworth, 



Bart. 

 William Sou they, jun., Esq. 

 William T. H. Strange, Esq. 

 Robert Tait, Esq. 

 Matthew Uzielli, Esq. 



were duly elected Members of the Royal Institution. 



William Augustus Hillman, Esq. F.R.C.S. 

 John Leighton, jun. Esq. F.S.A. 



were admitted Members of the Royal Institution. 



The Secretary announced that the following Arrangements had 

 been made for the Lectures after Easter : — 



Nine Lectures on the History of Italy during the Middle 

 Ages, by James Philip Lacaita, Esq. LL.D. 



Three Lectures {in contiiiuation) on Heat, considered as a 

 Mode of Motion, by John Tyndall, Esq. F.R.S. Professor of 

 Natural Philosophy, R.I. 



