201 
Marcu 167TH, 1855. (Stated Meeting.) 
THOMAS ROMNEY ROBINSON, D.D., Presrpent, 
in the Chair. 
Tue Secretary of the Council read the following Report from 
the Council :— 
REPORT. 
In presenting their Annual Report for the Session of 1854-5, 
the Council have to congratulate the Academy on increased activity 
in the publication of their Transactions. 
The Fifth Part (Science) of the Twenty-Second Volume has been 
recently published, and is now ready for distribution among the 
Members. : 
The Sixth Part (Polite Literature) is in a very advanced state, 
and the Council hope to be able to announce its publication in a 
very short time. 
The First Part (Science) of the Twenty-Third Volume is also 
partially printed, and the Second Part (Polite Literature) has been 
commenced. 
Several interesting papers have been, during the past year, com- 
municated to the Academy. 
In Pure and Mixed Mathematics we have had communications 
from Sir William R. Hamilton on ‘‘ Quaternions ;” and from Pro- 
fessor Graves on “ The Principles which regulate the Interchange 
of Symbols,” and on ‘‘ The Equation of Laplace’s Functions ;” and 
from Mr. Rennie on “ The Use of the Hygrometer in the Barome- 
tric Measurement of Heights.” The President has given us a paper 
on ‘‘ The Electro Magnet.” 
In the Sciences of Observation and Experiment, Professor 
Haughton has given us a paper on ‘“ The Reflexion of Plane Pola- 
rized Light from the Surface of Transparent Bodies,” and on 
“ The Optical Properties of the Micas contained in the Dublin, Wick- 
low, and Carlow Granites.’ We have also had communications 
from Dr. Lloyd on ‘“‘ The Magnetic Influence of the Moon;” from 
VOL. VI. T 
