Identifier: mapmodelingingeo00malt (find matches)
Title: Map modeling in geography : including the use of sand, clay putty, paper pulp, plaster of Paris, and other materials : also chalk modeling in its adaptation to purposes of illustration
Year: 1894 (1890s)
Authors: Maltby, Albert Elias, 1850-1924
Subjects: Block diagrams
Publisher: New York : E.L. Kellogg & Co.
Contributing Library: University of Connecticut Libraries
Digitizing Sponsor: University of Connecticut Libraries

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k. In order that the studentand teacher may be able to avail themselves properly of thisbeautiful medium, we give the following list of desirable colorsto be used in tinting: China white. Yellow ochre, Lemon yellow, Raw sienna, Vermilion, Venetian red, Rose madder, Carmine, Burnt sienna. Raw umber. Sepia, Gamboge, Indigo, Emerald green, Prussian blue, India ink. All the conventional tints employed in geographical repre-sentation may be obtained from these, and their use will addgreatly to the beauty of the maps made. Of course the onlylimit is the artistic talent of the molder. It is understood that the maps from which the molds aremade must be perfectly dry and hard, otherwise the matrices can-not readily be made. MAPS OF FINEST FINISH. A simple extension of the processes given before will g\vQ amethod for production of rehef maps of a quality not surpassedin this country. Let a plaster mold be made as in the directionsgiven, and into this pour a thin layer of fine, smooth pulp, con-
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Fig. 62.map of asia in plaster of paris. Paper Casts, 137 sistlng of macerated paper. This may then be backed by a thick,coarser pulp made of manilla, brown paper, etc. Another process which gives excellent results is as follows :Soak sheets of Whatmans best draughting paper in a size ofglue and paste. Take pieces of the required dimensions, and,pasting them together in layers, press them down into the moldof the map. Dry these layers by placing the mold in an oven ;then back the layers with pulp, or with plaster of Paris. Whenit is desirable to finish the map in water-colors, the first layershould be soaked in pure water, and the size or paste be appliedto one side only and after the sheet has been laid in the mold.Maps made in this way become very strong and durable, and arecapable of taking very high finish. We hope the day is not far distant when maps of the abovedescription will be made in great numbers in our own country. ONE USE OF RELIEF MAPS. The following double lesson given

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