In desperate circumstances men are ever apt to become discontented and impatient of restraint, each throwing off the discipline and control he had been subject to before, and each conceiving himself to have a right to act independently when the question becomes one of life and death.
Having decided upon leaving the party, and stealing a portion of the provisions, their object would be to accomplish this as effectually and as safely as they could; and in doing this, they might, without having had the slightest intention originally, of injuring either myself or the overseer, have taken such precautions, and made such previous arrangements as led to the fatal tragedy which occurred.

All three of the natives were well aware, that as long as they were willing to accompany us, they would share with us whatever we had left; or that, if resolutely bent upon leaving us, no restriction, save that of friendly advice, would be imposed to prevent their doing so; but at the same time they were aware that we would not have consented to divide our little stock of food for the purpose of enabling any one portion of the party to separate from the other, but rather that we would forcibly resist any attempts to effect such a division, either openly or by stealth.

They knew that they never could succeed in their plans openly, and that to do so by stealth effectually and safely, it would first be necessary to secure all the fire-arms, that they might incur no risk from our being alarmed before their purpose was completed.

No opportunity had occurred to bring their intentions into operation until the evening in question, when the scrubby nature of the country, the wildness of the night, the overseer's sound sleeping, and my own protracted absence, at a distance with the horses, had all conspired to favour them.

I have no doubt, that they first extinguished the fires, and then possessing themselves of the fire-arms, proceeded to plunder the baggage and select such things as they required.
In doing this they must have come across the ammunition, and loaded the guns preparatory to their departure, but this might have been without any premeditated intention of making use of them in the way they did.