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TWO:Bruce chafed under the flippancy. He was quite undecided what to do. Beyond all question the patient whom he had attended under such mysterious circumstances was the murdered man. Was it his duty at once to go to the police and tell them all he knew? On the other hand he had no desire to violate professional confidence. Certainly the lovely Spaniard and the people of the house could have nothing to do with the murder. If they had, they would never have called in a doctor's aid and paid him a handsome fee to save the life of that poor dissipated wretch. It must have happened after they had gone.Considered as a mechanical agent, a hammer concentrates the power of the arms, and applies it in a manner that meets the requirements of various purposes. If great force is required, a long swing and slow blows accomplish tons; if but little force is required, a short swing and rapid blows will servethe degree of force being not only continually at control, but also the direction in which it is applied. Other mechanism, if employed instead of hammers to perform a similar purpose, would require to be complicated [104] machines, and act in but one direction or in one plane.

Distillation equipment01

Distillation equipment02

THREE:What made you cut the ignition! snapped Sandy, working on the idea he had read in so many detective stories that a surprise attack often caused a person to be so startled as to reveal facts.
FORE:"What do you think of that?" Prout asked.

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FORE:47

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FORE:It is well for an apprentice to invent or demonstrate all that he canthe more the better; but as explained in a previous place, what is attempted should be according to some system, and with a proper object. Time spent groping in the dark after something of which no definite conception has been formed, or for any object not to fill an ascertained want, is generally time lost. To demonstrate or invent, one should begin methodically, like a bricklayer builds a wall, as he mortars and sets each brick, so should an engineer qualify, by careful study, each piece or movement that is added to a mechanical structure, so that when done, the result may be useful and enduring.

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