INTRODUCTION. 35 
king James. To gratify his new patron he wrote 
his Commentary upon the Schola Salerni, which 
poem was justly esteemed as an honour to the king- 
doms of Naples and Sicily. It has been said, that 
he was sent by Frederic to cure the pope, and died 
upon the voyage. The time of his death seems to 
have been in or before the year 1313, for in that 
year, in the council of Vienna, pope Clement the 
fifth Wrote circular letters to inform all persons who 
might have it in their possession, to produce his 
book De Praxi Medic’, which Arnald had promised 
‘e send him, but had died in the meanwhile. His 
works in medicine, chemistry, alchemy, astrology, 
and divinity, are very numerous. They were first 
cted and printed at Leyden in 1504, at Venice 
in 1505 in folio, and afterwards, after some inter- 
mediate editions, more correctly at Basil in 1585. 
In some of his works he styles himself Domini Pape 
hysicus, and Boniface the eighth was accused of 
heresy for approving of his writings. The following - 
Works relating to the same subjects with the Schola 
erni may be mentioned. His treatise de Con- 
“reatione Corporis, dedicated to king Frederic, was 
frequently printed with his comment on the Schola 
Salerni. “Another work, entitled Regimen Sanitatis, 
Was dedicated to the king of Arragon, James the 
Second, and was often printed ; but at length Mag- 
