of the apparatus to horizontalflues, it is mounted upon wheels, traversingupon the lower side of the flue, for the purposeof maintaining the rod to which the brushesare attached at or about the centre of the flue,and thereby enabling the brushes to actequally upon all sides of the flue or… … HE great amount of time, labour, and attentionrequisite for the production of engravings suchas those with which this series of articles isillustrated, necessarily impedes our preservingany exact degree of regularity with regard totheir appearance. We, therefore, think thatthis will serve as a…
Design · Decoration and ornament · Art
Internet Archive · Smithsonian Libraries · Public Domain Mark 1.0. Free to use for anything.
