Two units (equivalent to two years or four semesters) of laboratory science are required (three units are strongly recommended), providing fundamental knowledge in two of the following disciplines: Biology. Chemistry.
When talking corsetry, the most interesting period of fashion is the period from 1820 to about 1910. But the corset is much older than that. In Europe, it has been in general use as an undergarment since the middle ages, but it probably dates several thousands of years back. The corset has at all times been used for shaping the body, most often for compressing the waist, but sometimes for raising the bust. The most widespread use of corsets was in the 19th century. Contrary to common belief, almost all women of every class wore corsets in those times.
On one of the stomachers, there were four backstitches per inch; the Pfaltzgrafin's corset was made with smaller stitches and finer thread, as was the Effigy corset. To sum up During the 16th century, corsets were made out of linen, linen-cotton blends (after 1570), or, in the case of nobility, an outer layer of leather, satin or other silk and inner layers of linen. Whalebone, horn and reeds were the most commonly used materials for stiffening the pair of bodies, although heavy corded rope cannot be discounted as a possibility.