. 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. gth of EL with WL. By such means a good meridian line may be obtained, and itwill be exactly true if made June 21 or December 22. At othertimes, if greater accuracy is desired, the amount that the sun is fast or slow may be found from the almanac, and properallowance made. At all times very good results may be obtained by putting thestake upright, and, without any plumb-line or perforated tin, not-ing where t
. 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. gth of EL with WL. By such means a good meridian line may be obtained, and itwill be exactly true if made June 21 or December 22. At othertimes, if greater accuracy is desired, the amount that the sun is fast or slow may be found from the almanac, and properallowance made. At all times very good results may be obtained by putting thestake upright, and, without any plumb-line or perforated tin, not-ing where the end of the shadow strikes at noon. A line drawnfrom the foot of the stake to the end of the shadow will mark thenorth-and-south line; that is, the shadow will be on the meridian. If the windows open toward the south, a good north-and-southline can be found by continuing the- path of the beam of lightpassing through the window at local noon. Draw a line upon thefloor to mark the position of the meridian (Fig. 33). If teachers 64 A Line Upon the Sand. would devote a portion of theii time to work of this kind, we be-lieve that the pupils would obtain much better ideas of direction. Fig. distance. Allow the children to determine the direction ofthe common roads (Fig. 34), and to mark upon the maps whichthey construct the changes in direction which such roads is remarkable what progress in accurate work the pupils willmake under such instruction. We have in mind the animatedlooks of a large class of boys when they were told by their teacherthat we would learn the table of Surveyors Measure by actualpractice in the field. The following Saturday was named for theexercise. Promptly at the time appointed every lad appeared;and no band of U. S. engineers ever worked with more energythan did that class of practical geographers. They surveyed A Meridian Line. 65 lines, measured distances, estimated areas, and calculated theheight of trees from the shadows; and if they did
Size: 1603px × 1559px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookidmapmodelingi, bookyear1894
