THREE:Bruce held up his hand for silence.It is no uncommon thing for a skilled latheman to lock the slide rest, and resort to hand tools on many kinds of work when he is in a hurry.
THREE:The Germans advanced in a formation which I had never seen yet. The men went at the double-quick in closed ranks three abreast, each of the threefold files marching at a small distance from the other.Primarily, power is a product of heat; and wherever force and motion exist, they can be traced to heat as the generating element: whether the medium through which the power is [30] obtained be by the expansion of water or gases, the gravity of water, or the force of wind, heat will always be found as the prime source. So also will the phenomenon of expansion be found a constant principle of developing power, as will again be pointed out. As steam-engines constitute a large share of the machinery commonly met with, and as a class of machinery naturally engrosses attention in proportion, the study of mechanics generally begins with steam-engines, or steam machinery, as it may be called.
THREE:By sheer habit she looked at the label. It was the same, and not the same. Hetty stifled a cry of surprise. She had made no mistake before--of that she was certain. Then what could possibly have happened? Somebody had crept into the room in her absence and changed the bottles!
TWO:(1.) Why are machine frames constructed in sections, instead of being in one piece?(2.) Why must parts which have contact on opposite sides have specific dimensions?(3.) What are standards of measure based upon in England, America, and France?(4.) How can weight be measured by time?(5.) Has the French metre proved a standard admitting of test reference?
TWO:She looked me up and down suspiciously, and then said:












