...too often spend their money, waste their lives, and it may be lose their reason in the vain pursuits of visionary inventions, of which a moderate amount...number of those unhappy persons — to judge from the patent-lists, and from some of the mechanical journals— must be much greater than -is generally believed....

...too often spend their money, waste their lives, and it may be lose their reason in the vain pursuits of visionary inventions, of which a moderate amount...would be sufficient to demonstrate the fallacy ; and l'or want of such knowledge, many a man who might have been a useful and happy member of society, becomes...

...scarcely think it* application so wide as the author would apparently make it. Farther on he says, "Another evil, and one of the worst which arises from...knowledge would be sufficient to demonstrate the fallacy; aud for want of such knowledge, many a man who might have been a useful and happy member of society,...

...materials, and careful workmanship, that a temporary stability has been produced, but which contain witliin themselves sources of weakness, obvious to a scientific...number of those unhappy persons — to judge from the patentlists, and from some of the mechanical journals — must be much greater than is generally believed....

...operations of practical mechanics, are destitute of that knowledge of scientific principles which ia requisite to prevent their being misled by their own...anything more miserable. The number of those unhappy persons—to judge from the patentlists, and from some of the mechanical journals—must be much greater...

...that a large number of persons, possessed of an inventive turn of mind and of considerable skill in manual operations of practical mechanics, are destitute...number of those unhappy persons, to judge from the patent lists, and from some of the mechanical journals, must be much greater than is generally believed....

...practical principles, which might have been anticipated by reasoning, are left to be discovered by slow and costly experience. But it is on the practice of...number of those unhappy persons — to judge from the patentlists, and from some of the mechanical journals — must be much greater than is generally believed....

...number of persons, possessed of an inventive turn of mind and of considerable skill in manual operation of practical mechanics, are destitute of that knowledge...number of those unhappy persons, to judge from the patent lists and from some of the mechanical journals, must be much greater than is generally believed....

...ingenuity. Such men too often spend their money, waste their lives, and it may be lose their reasons, in the vain pursuit of visionary inventions, of which a moderate amount of theoretical knowledge wotild be sufficient to demonstrate the fallacy ; and for want of such knowledge many a man who might...

...Conservation of Energy and others equally important, are continually violated. Professor Rankme remarks:- 'Such men too often spend their money, waste their...whom it would be hard to find anything more miserable ' If 'RHB' looks a little further on m Fleeming Jenkin's lecture which he has already quoted, he will...