Constructive work; . XXII. beginning the work by all means choose simple designs, forthey are usually the most artistic as well as the most easilymade. Show the class, if possible, a collection of differentkinds of pottery. If the pottery itself can not be had secure good valuable pictures of primitive pottery in color may beobtained from the publication of the Ethnological Depart-ment of the United States Government. After all the pupilshave seen a good collection of pottery the first and mostimportant step in the lesson for them to do is the makingof a design on paper, in charc
Constructive work; . XXII. beginning the work by all means choose simple designs, forthey are usually the most artistic as well as the most easilymade. Show the class, if possible, a collection of differentkinds of pottery. If the pottery itself can not be had secure good valuable pictures of primitive pottery in color may beobtained from the publication of the Ethnological Depart-ment of the United States Government. After all the pupilshave seen a good collection of pottery the first and mostimportant step in the lesson for them to do is the makingof a design on paper, in charcoal, colored crayon or watercolor. The following is an outline giving the successive stepsnecessary to make a Making a form: 1. Material (a) Plaster of paris. (b) Linoleum. 2. Apparatus 1. The wheel. 2. Steel tool. 236 First Step— On the disk of the wheel already mentioned place, in avertical position, a piece of linoleum rolled into a cylinderand tied with a string as illustrated in the ris^ht of FIGURE XXIII. Second Step— Place into an earthen jar a certain amount of water. (Theamount depends on the size of the form desired), and siftinto it the plaster of paris until it reaches the surface of thewater. Stir well and add ©ne-third as much water as wasoriginally placed in the jar. Pour this mixture into thecylinder formed bv the rolling;- of the linoleum, as shown inthe right of Allow it to remain until the plaster becomes noticerblywarm to the hand. The time varies from fifteen to twenty-five minutes. Remove the linoleum and you have a solid cylinder ofplaster, as shown in center of Fig. XXIII. 237 Third Step— The operator now takes his place before the revolvHngdisk, as shown in center of Fig. XXIII. and resting histool, (a piece of sharp steel attached to a long handle) ona bar of iron or wood extending across the front of themachine, he cuts into the revolving plaster until he hasmade the shape shown in his design. See left of Fig. XXIV
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Keywords: ., bookcentury1900, bookdecade1900, booki, booksubjectmanualtraining
