Sentence:  [...] I beg you will go to Bailie Delap's shop, and get patterns of his best black bombaseen, and crape, and muslin, and bring them over to the parsonage, the morn's morning. [...] You will get, likewise, <WSD>swatches</WSD> of mourning print, with the lowest prices. 
Meaning of the word marked with <WSD> tags:  A piece, pattern, or sample, generally of cloth or a similar material.