Directions for construction of these garments are very minimal, and sometimes vague. The La Mode magazines are entirely in French. The pattern pieces are printed one on top of each other, with a different type of design for each line. A small sample is shown below. There is a substantial difference between the amount of wearing ease in these garments, compared to those of today.
Bodices are very form fitting, armholes much smaller and tighter,etc.
In the case of women's and young girl's patterns, it was assumed that the figure would be heavily corseted, and wearing a number of layers of under garments such as petticoats, chemises, corset covers - etc. For the sake of historical accuracy, the Library has chosen to reproduce and preserve these patterns as they were originally published. No changes have been made to allow for modern comfort. The original pattern sheets are printed without seam allowances. In order to allow for what may be substantial alternations, you must add your own seam allowances when cutting fabric.