- Software name: appdown
- Software type: Microsoft Framwork
- size: 209MB
"You mustn't do anything like that again," he muttered hoarsely. "Youmustletmeknowwhenyoufeel itcoming on."Allingham did so. Just on the edge of the lining there was an oblong-shaped tab, with small gold lettering:
"How did you know that?" Charlton asked.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  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.
"Have you got papers?"
CHAPTER XLV. A CHASE.In sketches and drawings made for practice, such as are not intended for the shop, it is suggested that metrical scales be employed; it will not interfere with feet and inches, and will prepare the mind for the introduction of this system of lineal measurement, which may in time be adopted in England and America, as it has been in many other countries.