. Scientific American Volume 05 Number 01 (July 1861). s of fever,dysentery and cholera, stalking over the bodies of asleeping army which has been exposed to the sun byday, quickly scent out the enfeebled skins, and dividethe prey. Whitwoeth and Armstrong Guns.—The LondonMechanics Magazine, of May 31st, says of the gun ofSir William Armstrong :— It has been proved to beinferior to others, by the late trials at Armstrong and Whitworth cannon have, withinthe past few days, been matched against each other,and after a fair trial, the Whitworth has been provedto be superior in accu
. Scientific American Volume 05 Number 01 (July 1861). s of fever,dysentery and cholera, stalking over the bodies of asleeping army which has been exposed to the sun byday, quickly scent out the enfeebled skins, and dividethe prey. Whitwoeth and Armstrong Guns.—The LondonMechanics Magazine, of May 31st, says of the gun ofSir William Armstrong :— It has been proved to beinferior to others, by the late trials at Armstrong and Whitworth cannon have, withinthe past few days, been matched against each other,and after a fair trial, the Whitworth has been provedto be superior in accuracy and range. Photographs of war Prisoners.—The question isasked, why dontour officers in service take a cheapphotograph of those prisoners who are allowed to de-part on taking the oath of allegiance? They might bereproduced for the use of every division of our army,and put into book form, furnishing the best possibleproof for hanging those caught in arms against thegovernment the second time, 11861 SCIENTIFIC AMERICAN, INC. 6 Wkt MmtUk LETTER FROM OUR WASHINGTON HOUSE. Washington, June 24, 1861. Messrs. Editors:—In connection with the ordnancecartridge to which I referred last week, I shouldhave stated that it gives practical value to an inven-tion of three years standing, which would otherwisehave been of much less importance. This is a muz-zle-loading cannon patented in 1858, which performsthe successive operations of loading, capping, firingand swabbing without requiring the attendant to ap-proach the muzzle, or otherwise expose himself tothe enemys fire. The cartridges are fed into a hop-per, much as apples are fed into a grinding this invention particularly lacked was some device to remove the metal cartridge case, which wantis now supplied. I notice, among the patents granted this year, oneissued on the 26th of March, to C. A. McEvoy, ofRichmond, Va., for an improvement in loading fire-arms. It consists in the use of a flanged metalliccasing, f
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