"Irregular lines of deep yellow clay trenches zigzag for miles. Other trenches run back from these to what looks like a huge Kansas 'prairie-dog town'--human burrows, where thousands of soldiers are literally living underground. From the lines of trenches running parallel to one another comes a constant, spitting, sputtering, popping of rifles, making the woods resound like a Chinese New Year in San Francisco or an old-time Fourth of July. Field guns and hand grenades furnish the 'cannon-cracker' effect. Through the woods the high-noted 'zing zing' of bullets sounds like a swarm of angry bees, while high overhead shrapnel and shell go shrieking on their way. Here and there you may see spades full of earth being thrown up as if by invisible hands, marking the onward work of the German gopher-like pioneers in their subterranean warfare. That is the Argonne forest. "As the trench I am in was still in the hands of the French three days ago and as the crown prince is advancing steadily, the trenches are temporary and contain little in the way of comforts. In deep niches cut in the side the soldiers rest, play cards or even sleep on damp ledges between fights. "The trenches also serve as a cemetery. When the enemy's fire is so hot that it is impossible to stick your head out or to take the dead out to bury them, the grave is made in a niche or a ledge cut into the side of the trench." GERMAN ADVANCE HALTED The western operations in December made it clear that the German advance to the Channel ports of France had been definitely halted. In the terrible battle of Ypres in Flanders, following the prolonged engagements along the Yser river, the Allies succeeded in repulsing the desperate German onslaught, and the German offensive was brought to a full stop. Towns and villages in Flanders, in Artois and in Champagne, that had been captured in the early German rush, were retaken one by one by the Belgians, French and British, slowly but surely, until the Germans were forced to act upon the defensive along a line of entrenchments prepared to enable them to keep open their communications through Belgium with their great base at Aix-la-Chapelle. An incident of the desperate fighting at Ypres, in which British and French troops practically annihilated six German regiments, including the crack Second regiment of Prussian Guards, has been graphically described by an eye-witness as follows: "A long valley stretches out before us and the little rise on which we stand--about fifty feet above the plain--commands it. The British guns are shooting almost horizontally at the German infantry trudging through the mud 2,000 yards away.