convenient, and results in a the tests. The accuracy insured in using this appar- their' objective. Imagine a shot weighing over 800' rapid wear and tear of the same. atus greatly exceeds the accuracy afforded by any pounds traveling over 2,000 feet a second, and strik- A very suitable device to… … thicker at the breech end. The disks slide down on eyeglass should be used in connec- to unknown mechanism of the sensitiveness shown by this tube in their proper order, the central ones having tion with the lens. The latter is fitted in a small selenium in regard to light. Our present knowledge…
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