Journal of the Franklin InstitutePergamon Press, 1867 |
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66 date acid apparatus bearing Bessemer process boiler bottom bridge broken stone cables carbonate carbonic acid cars cast iron cent centre chrome alum coal Coleman Sellers color condensers construction copper cost crystals cylinder depth diameter disk East River effect electricity employed engine equal experiments feet feldspar flue Franklin Institute furnace give gneiss gravel gravel road gutter heat hundred increased Journal lantern length less light MacAdam machine magic lantern magnesia manufacture material Mean daily Mechanics ment Messrs metal mica miles mineral observation obtained ordinary Park Patent Philadelphia piers plate portion pounds practical pressure produced quantity quarry Railroad rails railway result river rollers rolling safety-valve schist screen sesquioxide shaft shellac side solution specimens square inch steam strut sulphur surface suspension bridge thickness tion tons tube tunnel ventilation weight wheels wrought iron yards York
Popular passages
Page 360 - 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.
Page 264 - I was unable to determine whether these lines are those which occur in this part of the solar spectrum, or whether any of them are new lines due to an absorption which the light suffers by reflection from the planet. I have confirmed our former observation that several strong lines exist in the red portion of the spectrum. Fraunhofer's C was distinctly seen, and its identity determined by satisfactory measures with the micrometer of the spectrum apparatus. From this line the spectrum, as far as it...
Page 349 - Merrick, in the chair. The minutes of the last meeting were read and approved. The Actuary submitted the minutes of the Board of Managers, and reported that...
Page 105 - The portion of the plate not covered by the flange of beam is in the condition of a beam fixed at one end and free at the other. The formula for the moment, therefore, is : M...
Page 148 - I have long entertained the opinion that in virtue of the better education provided by continental nations, England must one day, and that no distant one, find herself outstripped by those nations, both in the arts of peace and war.
Page 227 - Many of these rusty cannon balls are probably ferrous oxide formed by the action of heat on the iron pyrites in the coal. There are also balls of black magnetic oxide : the perforated shells are probably ferrous sulphides, The globular form of these bodies suggests that they have been thrown off in scintillations, such as are seen during the combustion of iron in oxygen gas, and whilst in a fluid state they assume a spheroidal form. They are carried by the draught into the flue, and being of greater...
Page 417 - Still darker — Single dash. Nearly black Double dash. Except when specially requisite, only the symbols ... — are employed for the sake of simplicity, and then as signs of the relative, rather than of the absolute, amount of absorption ; and it is assumed that there is a gradual shading off from one tint to the other, unless the contrary is expressed. This is done by means of a small vertical line over the figure (see NTo.
Page 216 - NP Modern Marine Engineering, applied to Paddle and Screw Propulsion. Consisting of 36 colored plates, 259 practical woodcut illustrations, and 403 pages of descriptive matter. The whole being an exposition of the present practice of James Watt & Co., J. & G. Rennie, R.
Page 288 - ... that for several years past I have been acquainted with the manner in which you have conducted your business as Patent Solicitor. This has always been highly creditable to yourself, and satisfactory to the Patent Office. You understood your cases well, and presented them in that intelligible form which generally insured success. I make this Certificate, in hopes that it may...
Page 72 - Inst. CE, and M. Inst. ME Third Edition, Revised and much improved, with 115 Double Plates (20 of which now first appear in this edition), and numerous Additions to the Text. In Two Vols., Imp.