Among the volunteer regiments that were hotly engaged and lost heavily in Friday's battle were the Seventy-first New York and the Second Massachusetts. Both were armed with Springfield rifles, and this put them at a great disadvantage as compared with the regulars, all of whom used Krag-Jorgensen rifles or carbines with smokeless powder. In a wooded and chaparral-covered country like that around Santiago, where it was so easy to find concealment and so difficult to see troops at a distance, the use of smokeless powder was of the utmost possible importance. A body of men might be perfectly hidden in woods or chaparral within five hundred yards of the enemy's intrenchments, and if they used smokeless powder they might fire from there for half an hour without being seen or getting a return shot; but if they were armed with Springfields, the smoke from their very first volley revealed to the enemy their exact position, and the chaparral that concealed them was torn to pieces by a hail-storm of projectiles from Mausers and machine-guns. It was cruel and unreasonable to ask men to go into action, in such a field, with rifles that could be used only with common powder. Our men might as well have been required to hoist above the bushes and chaparral a big flag emblazoned with the words, "Here we are!" Dr. Hitchcock, surgeon of the Second Massachusetts, told me that again and again, when they were lying concealed in dense scrub beside a regiment of regulars, the latter would fire for twenty minutes without attracting a single return shot from the enemy's line; but the moment the men of the Second Massachusetts began to use their Springfields, and the smoke rose above the bushes, the Spaniards would concentrate their fire upon the spot, and kill or wound a dozen men in as many minutes. It is to be hoped that our government will not send any more troops abroad with these antiquated guns. They were good enough in their day, but they are peculiarly unsuited to the conditions of warfare in a tropical field. Wounded men from the front continued to come into the hospital camp on Saturday until long after midnight, and the exhausted surgeons worked at the operating-tables by candlelight until 3 A. M. I noticed, carrying stretchers and looking after the wounded, two or three volunteer assistants from civil life, among them Mr. Brewer of Pittsburg, who died of yellow fever a few days later at Siboney.