In his book page iii;
Quote:
ION; An atom that has lost one of its' electrons.A silver ion expressed as Ag+ 
indicating that it has lost one electron,and is water soluble,and will stay in 
solution indefinitely.The ion is still classified as a particle.
End of quote.

My experience ; one of my first batches [many years ago]was put in 
glass,lidded, and placed up on a shelf in my work-shop and it still has not 
changed,still in full solution,no plating,no settling out, with Tyndall effect.

Harold