648 Proceedings of Royal Society oj argh. 
ministro della Pubblica Istruzione in uno dei Ministeri presieduti 
dal Marchese Di Rudini. 
La fama di Lnigi Cremona e mondiale. Quasi tutte le Accademie 
straniere lo avevano eletto come Socio. La sua morte, avvenuta 
il 10 giugno, e stata un lutto perl’ Italia e per laScienza universale 
nella quale le sue scoperte gli assicureranno lungamente un posto 
d’ onore. 
ADDITIONAL NOTE BY PROFESSOR CHRYSTAL. 
I venture to add to the foregoing excellent notice by Professor 
Blaserna a word or two of personal recollection. 
In the year 1884, Cremona, along with Hermite and his son-in- 
law Emile Picard, was my guest during the Tercentenary Festival 
of the University of Edinburgh. His grave and dignified manner, 
and perhaps also his great reputation and the obvious deference 
with which the younger mathematician Picard, himself beginning 
to be famous, treated his Italian Colleague, gave me at first an im- 
pression of reserve and apartness. This was speedily dispelled by 
the sight of his almost boyish affection for Hermite, and by the 
rapidity with which he established relations with my young 
children, who soon came to idolise him. I well recollect an 
amusing scene when Hermite and Cremona were being photo- 
graphed in cap and gown as Honorary Graduates of the Uni- 
versity. Hermite was sitting ; and the photographer could not at 
first get the required expression. Cremona came to the rescue; 
and called to his friend: — “Allons done, songez a la loi de 
reciprocite.” This reference to one of his greatest discoveries 
brought the required smile to the face of the great French mathe- 
matician. 
It is, I think, worthy of record that, besides the three distin- 
guished mathematicians already mentioned, the following were 
present at the Tercentenary Festival in 1884 — Helmholtz, Bierens 
de Haan, Cayley, Sylvester, Lord Kelvin, Stokes, Salmon, Lord 
Rayleigh, and Tait. The majority of these dined one evening 
with Lord M‘Laren ; and it is scarcely probable that there ever 
was such a feast of mathematicians before or since. Of this 
