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By Alfred Koerner

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Extra info for A description of the Hotchkiss revolving cannon : with tables giving results obtained in experiments made with it

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Cannon with the guns under consideration ;1t that trial. The followin g tables comprise th e practice at ranges of 12 8o"'c'· and 189o"'•'·, as a comparison can only be then made if the ranges and other circumstances do not differ largely fro m each other. TRIALS AT SHOEI3URYNESS IN 1870. 30"'e1. apart. Distance of all guns from first target, 128o'"ct. Time of firing, two minutes. TABLE III. "' "'0 -~ = :::: 0 10<: NATURE OF ARM. 0 I - - I 1 mm .. 6"'"' E I " " " " Montigny Mitrailleur. 39 236 98 545 104 I 272 68 I I 19 2-1- 35 Second Experiment: Firing agai nst a column of targets 8,22"'•' long, representing 45 infantry, divided into three troops or companies 27m••· apart.

I -g'r ::1 N ATU RE OF ARM. ,... ,... ; -25-Smm. Gatling Gun . r6'"'"· " 238 ,. I 338 I. 99 41 164 48 I CONCLUSIONS FROM THE FOREGOING. , we find that the -number of hits per 100 shots fired with the Revolving Cannon, during an equal length of time, are six times greater than those obtained with the I 1'"'" than with the Mountain Gatling. I 1mm Gatling Gun, and twenty times greater E The number of hits per kil. of expended ammunition 1;; less fo r the Revolving Cannon than for the Field Gatling, but more than for the Mountain Gatling, while the effective power• is:For the Revolving Cannon For th e Field Gatling .

Observe that the effective power under the above stated conditions affords no judgment of the weight of ammunition expended ; and as there are certain cases where it is not only important to know· what effect can be produced with an arm, but what quantity of ammunition it requires to produce \his effect, it is necessary to compare these two figures with each other, and we can thus form a true judgment of the merits of the different arms. This definition of effective power is used by the French Artilleries, and in the present case is taken out of the " Memorial de l'Artillerie de Ia Marine,'· 2"'<· livraison, 1874, where the comparative trials of the Hotchkiss Revoh·ing Cannon with the other guns are reported.

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