Being a Complete Book of Lines for Carpentry and Joinery. Treating Fully on Practical Geometry, Soffits, Brick and Plaister Groins, Niches of Every Description, Sky-Lights, Lines for Roofs and Domes, with a Great Variety of Designs for Roofs, Trussed Girders, Floors, Domes, Bridges, &c. ; -Stair-Cases and Hand-Rails of Various Constructions ; Angle Bars for Shop Fronts, &c. ; and Raking Mouldings ; with Many Other Things Entirely New. The Whole Founded on True Geometrical Principles ; the Theory and Practice Well Explained, and Fully Exemplified on Seventy-eight Copper-plates, Correctly Engraved by the Author. Including Some Observations and Calculations on the Strength of Timber. By Peter Nicholson