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.
A facing is a fold applied to the edge of a garment for protection and finish, and has the appearance of a hem.
No. 8 and No. 9 needles, No. 50 and No. 70 thread, pins, and two pieces of cotton cloth, one piece six inches long and four inches wide, the other piece, for the facing, six inches long and two inches wide.