344 
publish them in such a way, that literary men on the Continent 
also, will have the opportunity of becoming acquainted with 
them. 
‘«¢ Tshould be most happy, if my remarks could in any de- 
gree increase the interest which aiready exists in Ireland, for 
its remains, both literary and monumeptal ; and if they also 
could shew how important it is that the antiquaries of the 
different countries should work together; that the Irish and 
Scandinavian, in particular, should unite their efforts more 
than they have hitherto done. I have tried to shew that 
our antiquities and sagas have an interest connected with 
Irish history. And I know now, better than before, how much 
light the Irish annals and other remains throw upon the in- 
vasions of the Danes and Norsemen in this country. 
‘¢ The archeologists have not yet their general meetings 
like the naturalists. But [hope that the easy communication 
which now exists between Ireland and Denmark will soon 
bring an Irish antiquary over to us, who, addressing our Royal 
Society of Northern Antiquaries, may impart to us some por- 
tion of the rich store of information which not only we, but 
the whole of Europe, have every reason to expect from the 
unigue Celtic National Museum, and the unique Celtic Lite- 
rature of Ireland.” 
The President communicated to the Academy the result 
of the further researches of Dr. Hincks, in connexion with 
the third Persepolitan Writing, in which the Author has ex- 
tended the number of ascertained characters from sixty-five to 
seventy-six. 
Sir William R. Hamilton made a communication respect- 
ing a new mode of geometrically conceiving, and of expressing 
in symbolical language, the Newtonian law of attraction, and 
the mathematical problem of determining the orbits and pertur- 
bations of bodies which are governed in their motions by that 
law. 
