The last number of our series of articles upon this highly interesting subject--interesting both as concerns the various features of the manufacture, and as indicative of the progress of the art in the successive ages of the world's history--closed the sketch of the rise and progress of the manufacture of flint glass. Our sketch has covered the ground so far as time would allow, from the introduction of the art into Egypt, through its transfer to Tyre and Sidon, and from thence, in its order, to Rome, Venice, France, and finally into England. The reader will notice that this progress, like that of many others, is almost identical, for a time at least, with the gradual extension of conquest, and especially with this, as connected with the extension of the Roman sway. We now reach the period of its introduction into the Western continent, and propose giving an outline of its gradual extension and characteristics in our own land. Our opportunity of research as to the period of the introduction of glass manufacture into this country, induce the belief that the first effort was made some years before the American Revolution. This attempt was by a company of Germans, who selected the town of Quincy, in this State, as the place in which to establish the manufacture. We are acquainted with little beyond the fact, that such an attempt was made; their success, or the length of time during which they carried on the work, are matters equally beyond our knowledge. Some specimens of their articles still exist, showing mainly that they engaged in the manufacture of what is called black metal only; these also are of the rudest style of the art. The place in Quincy in which their manufactory was established acquired the name from them of "Germantown," which name it retains to the present time. The site of their manufactory is now occupied, we believe, by the institution called "The Sailors' Snug Harbor." A Connecticut paper states a patent was granted by that State, in 1747, for twenty years, to Thomas Darling, for the exclusive privilege of making glass. This Act appears to have become void, because of the patentee not fulfilling its conditions, and at various times after this special grants were made to others to introduce the manufacture of glass. The Historical Society of Brooklyn, N.Y., has in their cabinet "a glass bottle, the first one manufactured at a glass-works started, in 1754, near the site of the present glass-works in State Street. This enterprise, we are informed, was brought to an untimely end for want of sand,--that is, the right kind of sand." From this we infer, it must be a flint-glass bottle, as the sand suitable for green or black glass abounds on their shore.