At sunset the five surgeons had operated upon and dressed the wounds of one hundred and fifty-four men. As night advanced and the wounded came in more rapidly, no count or record of the operations was made or attempted. Late in the evening of Friday, division and regimental surgeons began to come back to the hospital from the front, and the operating force was increased to ten. More tables were set out in front of the tents, and the surgeons worked at them all night, partly by moonlight and partly by the dim light of flaring candles held in the hands of stewards and attendants. Fortunately, the weather was clear and still, and the moon nearly full. There were no lanterns, apparently, in the camp,--at least, I saw none in use outside of the operating-tent,--and if the night had been dark, windy, or rainy, four fifths of the wounded would have had no help or surgical treatment whatever until the next day. All the operations outside of a single tent were performed by the dim light of one unsheltered and flaring candle, or at most two. More than once even the candles were extinguished for fear that they would draw the fire of Spanish sharp-shooters who were posted in trees south of the camp, and who exchanged shots with our pickets at intervals throughout the night. These cold-blooded and merciless guerrillas fired all day Friday at our ambulances and at our wounded as they were brought back from the battle-line, and killed two of our Red Cross men. There was good reason to fear, therefore, that they would fire into the hospital. It required some nerve on the part of our surgeons to stand beside operating-tables all night with their backs to a dark tropical jungle out of which came at intervals the sharp reports of guerrillas' rifles. But there was not a sign of hesitation or fear. Finding that they could not work satisfactorily by moonlight, brilliant although it was, they relighted their candles and took the risk. Before daybreak on Saturday morning they had performed more than three hundred operations, and then, as the wounded had ceased to come in, and all cases requiring immediate attention had been disposed of, they retired to their tents for a little rest. The five men who composed the original hospital force had worked incessantly for twenty-one hours.