Alflon. 13 
experiments, and found indudions, refult- 
ing from them. Nurtured from his early 
years in the fyftems of Tournefort, 
Ray, and Boerhaave, to the firll of 
which he had even given improvement, it 
is not ftrange, that, at an advanced age. 
Dr. Alston rejedled a fyftem of fo much 
novelty, as that of Linn.^us prefented* 
We do not willingly unlearn at fixty, 
what has been cheriflied from our eariieft 
youth. 
Dr. Alston's medical papers are, A 
Differtation on Tin as an Anthelmintic 
A Differtation on Opium and " K Cafe 
of extravafated Blood in the Pericardium^ 
Thefe are printed in the 'Ediiihiirgh Medi-^ 
cal Ejfays. 
In 1743, he difcovered a property in quick 
lime, which led him to believe, that the 
power of lime was not exhaufled by repeat- 
ed aiFufions of water to the fame lime j he 
adds, even for twenty or thirty times.. The 
firil notices of this paradox, as he then 
called it, were communicated to the Royal 
Society^ and were printed in the forty- 
feventh 
