An Improved Educational Appliance, Specially Applicable for use in Teaching Geography.

摘要

16,039. Lucas, W. Nov. 13. Copybooks.-A copybook comprises a series of leaves D with semi-transparent extensions E for tracing so arranged that a map or the like on a given sheet or on the cover can be traced on any or all of the other sheets. The sheets may be folded so that any two of the copies may be compared, or two copies may be placed one upon the other and viewed by transmitted light. The sheets D may be used for notes and memoranda.