This section is from the book "School Needlework. A Course of Study in Sewing designed for use in Schools", by Olive C. Hapgood. Also available from Amazon: School Needlework: A Course Of Study In Sewing Designed For Use In Schools.
Cloth darning is used to strengthen worn places, or to draw together the edges of a tear or cut.
Straightway-Darn.
No. 9 needle, No. 80 red, blue and pink thread, and two pieces of cotton cloth, each three inches and a half square.

Fig. 68. - Showing the cloth prepared by running lines, for practice in darning a straightway-tear; the blue thread representing the tear.
 
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