XXxii THIRD REPORT 1833. 



may we all meet at last in the presence of that Almighty Being, 

 whose will is the rule of all law, and whose bosom is the centre 

 of all power!" 



SECTIONAL MEETINGS. 



The Sections assembled daily at eleven a.m., and occasion- 

 ally also at half-past eight p.m., at their respective places of 

 meeting, in the Schools, the Astronomical Lecture-room, and 

 the Hall of Caius College. On Saturday, the Section of Na- 

 tural History made an excursion to the Fens. 



Abstracts of most of the Communications which were made 

 to the Sections will be found in a subsequent part of the 

 volume. 



In addition to the communications of which abstracts are 

 there given, notices of the following transactions appear on the 

 minutes : — 



M. Quetelet described the observations which he had made 

 on Falling Stars. It was suggested that such observations 

 might be available in certain cases for determining differences 

 of longitude. 



Mr. Potter communicated some calculations of the height 

 of the Aurora BoreaHs, seen on the 21st of March 1833. 



Mr. Hopkins gave an abstract of a paper on the Vibration 

 of Air in Cyhndrical Tubes of definite length. 



Dr. Ritchie made some remarks on the Sensibility of the 

 Eye, and the errors to which it is subject. 



Mr. Barton gave a view of his opinions on the Propagation 

 of Heat in solid bodies. 



A letter was received from Mr. Frend regarding certain 

 points in the Theory of the Tides. 



The Rev.W. Scoresby described a Celestial Compass invent- 

 ed by Col. Graydon. 



Mr. R. Murphy read some remarks on the utihty of observ- 

 ing the Magnetic Dip in Mines. 



M. Quetelet gave an account of some observations made by 

 himself and M. Necker de Saussure, which corroborate the 

 statements of M. Kuppfer, respecting theinequahty of magne- 

 tic intensity at the top and the base of mountains. 



Professor Christie stated his views relative to the cause of 

 the Magnetism of the Earth. 



Mr. A. Trevelyan read a paper on certain Vibrations of 

 Heated Metals. 



Mr. Brunei exhibited and explained a Model in illustration 

 of his method of constructing Bridges without centering. 



