A Problem in Regular Polygons

Abstract

The Farm Woodlot" (for Eastern States). 'Tree Windbreaks" (for States of the Central and Middle-South Regions). 'Nature Study and Forestry." 'Botany and Forestry." 'Manual Training and Forestry." 'Geography and Forestry." 'Agriculture and Forestry." A syllabus for a lecture accompanies each set. Slides are loaned for short periods, usually of one or two weeks, and the exhibits for three weeks to schools, clubs, lecturers, and others engaged in educational work, on condition that the borrowers pay transportation charges, be responsible for the material while charged to them, and forward it promptly at the direction of the Forest Service. Effort is made to arrange itineraries of exhibits so that borrowers will usually have to pay transportation only one way, and whenever practicable transfers are made between borrowers residing near each other. Ordinarily these arrangements are impracticable for lantern slides, and their transportation from Washington and return is paid by each borrower. The lantern slide sets, packed for shipment, weigh usually less than fifteen pounds, the exhibits less than twenty-five pounds. Applications for these materials should be made to the Forest Service, Washington, D. C. Applicants should state that they agree to the conditions on which loans are made, as outlined above.