Thering which supplies our aerolites and shooting starshas a total mass of not more than a tenth part thatof the Earth. The total mass of the small planetsbetween Mars and Jupiter is greater than one-thirdthat of the Earth. SutniiRic acid mixed with alcohol, and submittedto gentle heat, forms… … Diastimeter for Military Use. {Translated from the Swiss Polytechulo Journal.] Since firearms of every description have been muchimproved of late, as regards their accuracy and thedistance to which they carry, it is indispensable tohave some device for measuring or determining dis-tance with…
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