This is a form of periodic drunkenness. Those coming under this head have seasons when they have no desire

whatever for drink, and, so far as their feelings are concerned they see no reason why they should ever get on another spree. But a time comes when the desire takes them suddenly, and before they have had time to think very much about it, they are drinking heavily. The duration of this condition varies in individual cases. Some will get over the desire in a week; others will stay more or less drunk for a month, and then sober up and be absolutely free from the desire or habit for months perhaps.