One day, at a quiet early hour, I found myself nearly alone in a certain gallery, wherein one particular picture of portentous size, set up in the best light, having a cordon of protection stretched before it, and a cushioned bench duly set in front for the accommodation of worshipping connoisseurs, who, having gazed themselves off their feet, might be fain to complete the business sitting; this picture, I say, seemed to consider itself the queen of the collection.