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FORE:On Thursday, August 20th, I decided to go once more in the direction of Tongres. As the Germans had picketed the main road along the Netherland frontier, I made a detour and dragged my bicycle across the mountain near Petit Laney, a very trying job in the stifling heat. From the mountain top I had a beautiful vista, which enabled me to see that near Riemst a large German force was encamped at which I desired to have a look. So I walked down the hill to Canne, where some crofters were trying to get their cattle into The Netherlands. These poor creatures, who usually own two or three head of cattle, had been compelled already to give up half of their stock. From Canne I cut through corn and beetroot fields to the road to Riemst. The first German sentinels were tolerably friendly.5. Every part laid down has something to govern it that may be termed a "base"��some condition of function or position which, if understood, will suggest size, shape, and relation to other parts. By searching after a base for each and every part and detail, the draughtsman proceeds upon a regular system, continually maintaining a test of what is done. Every wheel, shaft, screw or piece of framing should be made with a clear view of the functions it has to fill, and there are, as before said, always reasons why such parts should be of a certain size, have such a speed of movement, or a certain amount of bearing surface, and so on. These reasons or conditions may be classed as expedient, important, or essential, and must be estimated accordingly. As claimed at the beginning, the designs of machines can only in a limited degree be determined by mathematical data. Leaving out all considerations of machine operation with which books have scarcely attempted to deal, we have only to refer to the element of strains to verify the general truth of the proposition.

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