221 



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 

 heen usually occupied hy others hefore, or is likely to he 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 heen 

 thought due hy 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 this attest, that minds were found which 

 could appreciate and admire you early in this your native country. 



DONATIONS. 



Comptes Rendus Hebdomadaires des Seances de V Aca- 

 demic 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, 



