 | William Kirby, William Spence - 1818 - 552 páginas
...second. But if alarmed, he states their velocity can be increased six or sevenfold, or to thirty or thirty-five feet, in the same period. In this space...ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her s wi ftest fl ight, will in the sa me space of time go more than... | |
 | James Lawson Drummond - 1831 - 508 páginas
...but if alarmed," he states, " their velocity " can be increased six or seven-fold, or to thirty '" or thirty-five feet, in the same period. In " this space of time a race-horse would clear * Lardner's Cabinet Cyclopaedia, vol. vp 11. " only ninety feet, which is at the rate of... | |
 | James Lawson Drummond - 1832 - 316 páginas
...seven-fold, or to thirty or thirty-five feet, in the same period. In this space of time a race-horse would clear only ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her swiftest flight, will, in the same space of time, go more than... | |
 | Thomas Rymer Jones - 1841 - 774 páginas
...second ; but, if alarmed, he states their velocity can be increased six or seven-fold, or to thirty or thirty-five feet in the same period. In this space...ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her swiftest flight, will in the same space of time go more than the... | |
 | William Kirby, William Spence - 1843 - 452 páginas
...second. But if alarmed, he states, their velocity can be increased six or seven-fold, or to thirty or thirty-five feet in the same period. In this space...ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her swiftest flight, will in the same space of time go more than the... | |
 | William Samuel Waithman Ruschenberger - 1845 - 142 páginas
...second ; bat if alarmed, he states their velocity can be increased six or seven fold, or to thirty or thirty-five feet in the same period. In this space...ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her swiftest flight, will in the same space of time go more than the... | |
 | 1846 - 424 páginas
...will sustain itself in the air, and fly with equal facility and swiftness backwards and forwards, to the right hand or to the left, without turning. Neither...compare the infinite difference in the size of the two animals—ten millions of the fly would hardly counterpoise one racer—and how wonderful will the... | |
 | Robert Kemp Philp - 408 páginas
...Telocity can be increased sis or seven-fold in tin same period, while a race-horse could only clear ninety feet, which is at the rate of more than a mile in a minute. Now, comparing the infinite difference of size that exists between a fly and • rncer,... | |
 | Joseph Harrison - 272 páginas
...every second; but if alarmed their velocity can be increased six or seven fold, or to thirty, or even thirty-five feet in the same period. In this space of time a race-horse could only clear ninety feet, which is at the rate of more than a mile a minute. Our little fly, in her swiftest... | |
 | 1854 - 394 páginas
...second. But if alarmed, he states, their velocity can be increased six or sevenfold, or to thirty or thirty-five feet in the same period. In this space...ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her swiftest flight, will, in the same space of time go more than the... | |
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... thirty-five feet in the same period. In this space of time a race-horse could clear only ninety feet, which is at the rate of more than a mile in a minute. Our little fly, in her swiftest flight, will in the same space of time go more than the third... 
