99} 
own 
lead me to feel an even stronger interest in dynamic and deductive 
researches. 
But I have suffered myself to speak at greater length than has 
been usually occupied by others before, or is likely to be occupied 
by me hereafter on other similar occasions, and certainly at greater 
length than was required to justify the award of your Council. 
The reasons which I pleaded at the commencement of this address 
may, perhaps, serve partly as my excuse for having occupied your 
time so long; and some additional indulgence may have been 
thought due by those who remember that many years ago, both 
here and elsewhere, in public and in private, I expressed strongly 
my admiration of the talents of him to whom I have now the 
gratifying office of presenting this first public mark of honour from 
his scientific brethren and cotemporaries. 
[The President then, delivering the Medal to Professor 
Mac Cullagh, addressed him as follows :—] 
Professor Mac Cullagh, 
I present to you this medal, awarded to you by the President 
and Council of the Royal Irish Academy. Accept it as a mark of 
the interest and intellectual sympathy with which we regard your 
researches ; of the pleasure with which we have received the com- 
munications wherewith you have already favoured us; and of our 
hope to be favoured with other communications hereafter. And 
when your genius shall have filled a wider sphere of fame than 
that which (though already recognized, and not here only) it has 
yet come to occupy, let ¢his attest, that minds were found which 
could appreciate and admire you early in this your native country. 
DONATIONS. 
Comptes Rendus Hebdomadaires des Séances de Aca- 
demie des Sciences. Par MM. les Secretaires Perpetuels, 
Premier Semestre. No. 22, 1838. Tables Alphabetiques, 
Juillet, Decembre, 1837. Presented by the Academy. 
Journal of the Franklin Institute of the State of Pensyl- 
vania, and Mechanics’ Register. Edited by Thomas P, Jones, 
