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acting already angle applied attraction axle become bell body called caused centre of gravity circle cloth combination compression considered constant containing cord corresponding dark denote described direction distance divided earth effect elasticity employed equal equation equilibrium evident Example experiments fall feet fixed force friction gases give given glass half heat Illustrated important inches increase interval kind known length less light liquid manner means measured mechanical mercury molecules motion move natural observed octave opposite original particles passing pendulum piston placed plane position Power pressure principle produced proportional proved pulley quantity radius rays reflected represent Resistance rest resultant shown solid sound space specific gravity square supposed surface temperature third tube varies velocity vertical vibrations volume wave weight wheel whole
Page 163 - Harp of my Country! in darkness I found thee, •*— ' The cold chain of silence had hung o'er thee long, When proudly, my own Island Harp, I unbound thee, And gave all thy chords to light, freedom, and song ! The warm lay of love and the light note of gladness Have wakened thy fondest, thy liveliest thrill ; But, so oft hast thou echoed the deep sigh of sadness, That even in thy mirth it will steal from thee still.
Page 97 - ... that the squares of the periodic times of the planets are proportional to the cubes of their mean distances from the sun.
Page 254 - Price 6d. Natural History, Cassell's Popular. Profusely Illustrated with splendid Engravings and Tinted Plates. Complete in Two Volumes, bound in cloth, 30s. Do., Two Volumes, half-calf, full gilt back, 45s. Do., Two Volumes, halfmorocco, full gilt, 50s.
Page 259 - Little Songs for Me to Sing. Illustrated by JE MILLAIS, RA ; with Music composed expressly for the Work by HENRY LESLIE. Square Crown (Dedicated, by express permission, to Her Royal Highness the PRINCESS OF WALES) 6s. The Child's Garland of Little Poems ; Rhymes for Little People. With Exquisite Illustrative Borders by GIACOMELLI.
Page 143 - Wollaston called attention to the sound, or susurrvs, produced by the muscles when in a state of contraction. He states correctly that this sound is best produced by inserting gently the extremity of the finger into the ear, bringing at the same time the muscles of the hand and fore-arm into strong contraction. The...
Page 139 - Trunk Piston types. Plunger steam engine. The internal combustion engine is usually single-acting, so its piston is of the trunk type. A trunk-type piston is one which has the shape of a short cylinder closed at one end, and open at the other. The closed end forms the piston face, in contact with the working medium. The remainder of it is the skirt of the piston, and is provided to align the piston properly in the cylinder, to support the wrist pin, and to provide bearing area on the cylinder wall...
Page 259 - DEDICATED TO THE PRINCESS BEATRICE. The Children's Garden, and What they Made of it. By AGNES and MARIA E. CATLOW. With several Illustrations.
Page 97 - The line joining the planet to the sun sweeps out equal areas in equal times.