As we drew near to the exceedingly narrow gate in the palisade, which had been thrown open to admit us--and which, I presently saw, was strongly guarded by a number of warriors armed with heavy, broad-bladed spears, murderous-looking swords, and small round shields, or targets, of wood covered with what looked like crocodile hide--I became sensible of a horrible charnel-house smell; but it was not until we had passed through the gate, and were inside the palisaded enclosure, that I discovered from whence it emanated.  Then, observing the direction of the wind which wafted this dreadful odour to my nostrils, I looked that way and presently noticed a large dead tree standing in the middle of the square that formed the centre of this part of the town.  It was the immense number of birds that wheeled and screamed about this tree that first caused me to regard it with particular attention, but even then I could not, for the moment, see anything to account for either the birds or the odour.  But a minute or two later, as we drew nearer the tree, the stench meanwhile becoming almost overpoweringly strong, I detected fastened to the trunk of the tree, in a manner that was not at first apparent, nine human corpses, some of them so far advanced in decomposition that even the birds would not approach them!  Then I understood that I saw before me that detestable thing of which I had often heard as the most prominent object in the typical African native town or village, the "crucifixion tree," upon which the petty despot who rules over that particular community is wont summarily to put to a cruel and lingering death such of his subjects as may be unfortunate enough to offend him!  In some cases, I believe, the monarch is content to cause his victims to be securely lashed to the crucifixion tree by stout lianas, there to perish slowly of hunger and thirst; but King Banda, the potentate whose will was law in this particular town, had carried his cruelty to its utmost limit by adopting the time-honoured method of nailing his victims to the tree with spike nails driven through the hands and feet into the tough timber.