HES: QUERY--Keynes and discontinuous stock market

[Yuri Biondi]

In their book titled "Models for Investors in Real World Markets" (2003: 
139), the authors (JR Thompson, EE Williams, and M. Chapman Findlay III) 
made a vague reference to a "Keynes' proposal that the stock market should 
be allowed to open only once a year".

I was unable to find out the exact match, could someone help ?

Thanks in advance for comments and suggestions,

Yuri Biondi