about 90 u00b0 95 u00b0 c for approximately one hour while the fabric is either in folds or in a roll and 4 washing in aqueous baths first at 90 u00b0 95 u00b0 c then at 60 u00b0 c and finally in a cold bath of water to remove whatever remains of the bath and byproducts the basic aqueous desizing bleaching bath used in the examples that follow contained for each liter ______________________________________ethylene diamine tetraacetic 2 g lacid trilon c by b a s f sodium silicate 20 g l35 hydrogen peroxide 40 ml lhigh temperature amylase 10 g l enzylase c by diamalt non ionic wetting agent 1 5 ml l ukanil 1036 by pcuk ______________________________________ the following examples are set forth for purposes of illustration of the invention only and not by way of limitation examples 1 to 5 were carried out with a 100 cotton cloth of 160 g m 2 containing as sizing 9 20 of starch compounds amylaceous materials and having a zeiss elrepho reflectance of 56 u00b0 and a polymerization index of 1940 the following buffers were tested by being added to the bath noted above the quantities indicated are expressed in g for 1 l of bath ______________________________________example 1 sodium formate 15 g l ph obtained 10 4example 2 sodium bicarbonate 22 g l potassium carbonate 8 4 g l ph obtained 9 5example 3 sodium metaborate 14 g l ph obtained 9 8example 4 glycine 20 g l ph obtained 10 4example 5 sodium tetraborate deca 10.