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.
Stockinet darning is used in filling in a hole with thread, so as to supply the part that has been destroyed ; or in strengthening a place which shows signs of weakness.
Practice in Weaving.