Art . ]), which we know to be of thesame length as the near one, byno means appears so, as it doesnot nearly reach the limits of thetwo vertical fingers which theends of the front edge are now toucliing. It will be observed also thattwo of the sides, which we know to l)e parallel, appear to slant towardone another. We are assisted in seeing this by comparing the apparentslant of the receding edge Avith the vertical lines made by the and also l)y observing the angle made by the vertical finger and thereceding edge. In this solid ol)ject we are aided in seeing convergence liy two exter
Art . ]), which we know to be of thesame length as the near one, byno means appears so, as it doesnot nearly reach the limits of thetwo vertical fingers which theends of the front edge are now toucliing. It will be observed also thattwo of the sides, which we know to l)e parallel, appear to slant towardone another. We are assisted in seeing this by comparing the apparentslant of the receding edge Avith the vertical lines made by the and also l)y observing the angle made by the vertical finger and thereceding edge. In this solid ol)ject we are aided in seeing convergence liy two exterior anglesin the front, while in our former lesson with the hollow model we were aided bvthe two interior angles at the back. The book should be studied in this way at various heights before any drawingis done. IV The drawing of a book placed with its back toward the pupil on the desk aheadand straight in front of him. The book must be made level in the manner explainedin the case of the cubical FORESHORTENING Am) CONVERGENCE 251 1. Estimate the proportions of tlie back of tlie book and draw the l)ack very lightly. 2. Take pencil measurements, comparing the thickness with the length of the back and correct, if necessary, the light sketch already made. 3. Judge the position of the l)ack edge of the top in relation to its near edge and lightly place it. 4. By pencil measurement test the accuracy of this judgment, measuring the thickness of the book and comparing this dimension with the apparentwidth of the foreshortened top. 5. Correct, if necessary, the placing of the back line.
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishe, booksubjectdrawing
