Different types of wool from various animals d. Classification by Fleece: Wool shorn from young lambs differs in quality from that of older sheep. Also, fleece differ according to whether they come from live or dead sheep, which necessitates standards for the classification of fleece.

a. Cotton and Linen: If the fabric is white cotton it should be allowed for at least 4 hours in hot water to remove starch. To shrink the cloth uniformly the position of the cloth in vessel should be changed occasionally. For coloured materials luke warm water should be used and the same processes followed as for white fabrics given above. Different coloured fabrics should not be immersed in water together. Each colour should be immersed separately. After the material has been shrunk it should be allowed to dry in shade and should not be squeezed to remove water. The stiff materials like canvas or long cloth etc. should also be shrunk before they are used.