On a windy, unpleasant day in 1746, a great mathematician and philosopher was exhibiting to a select company in the gardens of the Charterhouse his skill in shooting round a corner with a bent gun-barrel. If he had requested the editor of the _Cornhill Magazine_ of the day to publish his experiments, it is probable that he would have been refused. Now, when every morning paper informs us at breakfast, in its best type, of how far off we may be killed, and the evening papers analyze the same with the commencement of a hot debate on the French Treaty, to give us a pleasing subject for our dreams, we think that perhaps our unprofessional readers may like to know _the how_ and _the why_ of these far-reaching organs of peace on earth and good-will among faithful allies. Supposing, then, reader—for it is to such that this article is addressed—that you are wholly ignorant of the science of gunnery, and of its principal establisher, Benjamin Robins, and have, therefore, been laughing at him, the poor silly philosopher,—if you will read the following extract from his work on Gunnery, you will see that if he did a foolish thing, he certainly sometimes wrote a wise one:—“I shall, therefore, close this paper with predicting that whatever State shall thoroughly comprehend the nature and advantages of rifled-barrel pieces, and, having facilitated and completed their construction, shall introduce into their armies their general use, with a dexterity in the management of them, they will by this means acquire a superiority which will almost equal anything that has been done at any time by the particular excellence of any one kind of arms; and will, perhaps, fall but little short of the wonderful effects which histories relate to have been formerly produced by the first inventors of fire-arms.” Now to our distinguished countryman, Mr. Benjamin Robins, is due the credit of having first pointed out the reasons why _smooth bores_—and smooth bore is now almost as great a term of reproach with us rifle volunteers as dog is with a Turk—were constantly, in fact, universally, in the habit of shooting round corners, and the experiment mentioned was only a means of bringing the fact more strikingly before the obtuse faculties of the Royal Society, whom we may imagine to have been intense admirers of brown-bess—also now a term of reproach in constant use. Mr. Robins did more; he pointed out the advantage of elongated rifle bullets; showed us how to determine—and partially, as far as his limited means permitted, himself determined—the enormous resistance of the atmosphere to the motion of projectiles; in fact, smoothed the way for all our present _discoveries_; and, treason though it be to say so, left the science of gunnery much as we have it now. Though principally from increased mechanical powers of construction, better material and improved machinery, we have advanced considerably in the Art or practice of destruction.