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Seite 74 - THE BOYDEN PREMIUM URIAH A. BOYDEN, ESQ., of Boston, Mass., has deposited with THE FRANKLIN INSTITUTE the sum of one thousand dollars, to be awarded as a premium to "Any resident of North America who shall determine by experiment whether all rays of light,* and other physical rays, are or are not transmitted with the same velocity.
Seite 409 - Newton generalized the law of attraction into a statement that every particle of matter in the universe attracts every other particle with a force which varies directly as the product of their masses and inversely as the square of the distance between them; and he thence deduced the law of attraction for spherical shells of constant density.
Seite 144 - Agriculture, with the theoretical investigations respecting the Motive Power of Heat and the proper Proportions of Steam Engines. Elaborate Tables of the right dimensions of every part, and Practical Instructions for the Manufacture and Management of every species of Engine in actual use. By JOHN BOURNE, being the ninth edition of " A Treatise on the Steam Engine," by the
Seite 74 - Sellers, in the chair. The Secretary read the minutes of the last meeting, which were approved.
Seite 144 - ... enter. Advanced students and men of science desiring to avail themselves of the appliances of the laboratories of the Stevens Institute, to carry on special investigations, may apply to the President.
Seite 288 - The Committee on Science and the Arts constituted by the Franklin Institute of the State of Pennsylvania, for the promotion of the Mechanic Arts, to whom was referred for examination a Solar Compass, invented by WM.
Seite vi - DRAWING. rf^HE subscriber would respectfully inform his friends and the public, that hecon1 tinues to give instruction in MACHINE, ARCHITECTURAL, TOPOGRAPHICAL, and LANDSCAPE DRAWING, and PAINTING in OIL and WATER COLORS. Day and Evening Classes at the office, and instructions given in Schools and Families, Drawings for Patents correctly made, and Designs furnished.
Seite 98 - It has been said that good workmen can do good work with poor tools. Skill and ingenuity may indeed accomplish great results, but the problem of the day is not only how to secure more good workmen, but how to enable such workmen as are at our command to do good work, and how to enable the many really skillful mechanics to accomplish more and better work than heretofore...
Seite 74 - FOR PRACTICAL & ANALYTICAL CHEMISTRY, CHANT STREET, TENTH STREET BELOW MARKET, (Rear of St. Stephen's Church, Philadelphia.) ESTABLISHED IN 1636.
Seite 144 - TRIE of POSTAGE. Communications and letters on business must be directed to the ACTUARY OF THE FRANKLIN INSTITUTE, PHILADELPHIA. The Journal can also be obtained from the following : DAVID G. FRANCIS, New York. JOHN WILEY & SON, « " D. VAN NOSTRAND, " « LW SCHMIDT, WC LITTLE & CO., Albany, New York. LITTLE, BROWN A CO., Boston, Massachusetts.