THREE:Now we can catch them and ride them down! exulted Dick.Now well dive to where the hydroplane can see us, and the dive will signal the yacht that were the airplane theyll be watching for, Dick decided.
THREE:Next in order are strains. As the cutting action is the source of strains, and as the resistance offered by the cutting tools is as the length or width of the edges, it will be found in the present case that while other conditions thus far have pointed to small proportions, there is now a new one which calls for large proportions. In displacing the metal between teeth of three-quarters of an inch pitch, the cutting edge or the amount of surface acted upon is equal to a width of one inch and a half. It is true, the displacement may be small at each cut, but the strain is rather to be based upon the breadth of the acting edge than the actual displacement of metal, and we find here strains equal to the average duty of a large planing machine. This strain radiates from the cutting point as from a centre, falling on the supports of the work with a tendency to force it from the framing. Between the rack and the crank-shaft bearing, through the medium of the tool, cutter bar, connection, and crank pin, and in various directions and degrees, this strain may be followed by means of a simple diagram. Besides this cutting strain, there are none of importance; the tension of the belt, the side thrust in bearings, the strain from the angular thrust of the crank, and the end thrust of the tool, although not to be lost sight of, need not have much to do with problems of strength, proportion, and arrangement.The eye fails to detect variations in size, even by comparison, long before we reach the necessary precision in common fitting. Even by comparison with figured scales or measuring with rules, the difference between a proper and a spoiled fit is not discernible by sight.
THREE:There is, perhaps, no more fitting conclusion to these suggestions for apprentices than a word about health and strength. It was remarked in connection with the subject of drawing, that the powers of a mechanical engineer were to be measured by his education and mental abilities, no more than by his vitality and physical strength, a proposition which it will be well for an apprentice to keep in mind."Take it, and welcome, sir," he said. "I shall have my hands full for the next day or two, and anyway there is no hurry."
TWO:"'6. I am convinced that on the whole the treatment of the wounded was generous and exemplary. But it is also a fact that the terrible hatred of the Germans against the British, encouraged by their military authorities (one has to think of the proclamation of Prince Rupert of Bavaria) and their scandalous comic papers, which disgust even decent Germans, induce to extravagances such as I witnessed at Landen. Did not a German officer explain to an editor of the Algemeen Handelsolad (evening issue of October 18th): "The unwritten order is to make everywhere as many French and as few English prisoners as possible; we don't try to wound, but to kill the British."'"