198 Royal Irish Academy. 



on the subject "was presented to the Academy in 1846 (see list 

 infra) ; in it he satisfactorily explains a phenomenon which had 

 been attributed to a vorticose movement in some earthquake shocks. 

 ^Numerous other Papers followed in the Transactions of the Academy 

 and of various other societies. In 1858 he completed, with the assist- 

 ance of his son, Professor J. "W. Mallet, the Earthquake Catalogue of 

 the British Association, in which records of more than 6000 earthquakes 

 are given. It was in this same year that he was commissioned by 

 the Eoyal Society of London to study, on the ground, the effects 

 of the great earthquake which had occurred in the district of Naples 

 in the preceding year. The results of his investigation were given in 

 his work, in two vols. 8vo, "The Great Neapolitan Earthquake of 

 1857," published in London in 1862. His last Paper on this subject, 

 " On "Volcanic Energy," appeared in the Philosophical Transactions. 

 1872. It was for his important labours in this field that he re- 

 ceived the Cunningham Gold Medal from the Eoyal Irish Academy in 

 1862, and the "WoUaston Gold Medal from the Geological Society of 

 London in 1877. 



List of Papers by Mr. Mallet in the Transactions of the Academy : — 



" On a Mtherto unobserved Structure discovered in certain Trap Eocks in the 

 County of Gal^ray." (1837). 



"On the Dynamics of Earthquakes, being an attempt to reduce their Phenomena 

 to the known laws of Wave Motion." (1846). 



" On the Objects, Construction, and Use, of certain Instruments for self regis- 

 tration of the passage of Earthquake Shocks." (1846). 



" Notice of the British Earthquake of November 9, 1852." (1854). 



' ' On the Physical Conditions involved in the Construction of Artillery, and on 

 some hitherto unexplained Causes of the Destruction of Cannon in Service." 

 (1855). 



Thomas Romney Pobinson, d.d., ll.d., Dublin and Cambridge; 

 D.c.L. Oxford; f.e.s.; Hon. f.e.s.e., f.e.a.s. ; Ord. Boruss. Pour le 

 Merite ; Honorary and Corresponding Member of various Eoreign 

 Societies, was born in Dublin, April 23, 1792, and died, having nearly 

 completed his 90th year, on February 28, 1882. At the very early age 

 of 13, he entered Trinity College, Dublin, of which he became Scholar 

 in 1808, and Fellow in 1814. He was elected Member of the Royal 

 Irish Academy in 1816, and his first contribution to the Academy's 



