39 On Bha clung. 



after printing and dvoing. Tho«;e bleached after the use of 

 pours, as described, arc always free from stain?, and very 

 clear whites. 



I am very happy to have it in my power to add the fol- 

 lowing very respectable scientific authorities in favour of 

 mv practice, Sec. to w-hoin I comjnuu'catcd the result, viz. 

 - — Wm. Hiffftins, Esq. M. R. 1. A. Profest^or of Chemistry, 

 &c. Hichm-rrKirwan, Esq. F. R. S. M. K. I. A. &:c. and to 

 James McDonald, Esq. ^i. D. Sec. Belfast, who has at- 

 tended the process at my works, and whotc Report is be- 

 fore the Linen Board. 



On Soap) substituted for Bran in Bleaching. By the same. 



The legislatures of Great Britain and Ireland hnve adopted 

 wise and salutary measure^ tor increasing the quantity of 

 food, by oifering bounties on importation ; they have like- 

 wise lessened its consumption by stopping the distilleries. 

 It becomes then the indi.^.pensable duty of all, especially in 

 periods such as the present, to avoid the smallest waste or 

 misapplication of food. ]>ran, if given to horses, saves 

 corn ; if to horned cattle, it produces milk, butter, or beef; 

 but when used by calico printers, it is worse than throwing 

 it away ; for in most cases it is not only unnecessary and 

 expensive, but injurious. There is still a stronger reason 

 for avoiding the waste of it, on which at present it is better 

 to be silent. Prejudice, therefore, will give place to public 

 good, and the calico printers may rely on the following;' pro- 

 cess, as it has been practised for more than a year by a 

 house of long experience and proficiency in that business. 



Let six or seven pounds of black or soft soap be well 

 dissolved in hot water; pour about two-thirds of the above 

 mto a copper of hot water (ISO to loo'^ of Fahrenheit): 

 when the calicoes or muslins which have been dyed in mad- 

 der are washed as for branning, give them live or six ends 

 over the wince, taking only three pieces of calico or six of 

 muslin at a time, that they may be even. Renew your cop- 

 per with the reraainder of the soap, and through one cop- 

 per may be done twenty-seven or thirty calicoes, and about 

 double the number of muslins. I,et them be washed as 

 after bran, and pinned on the grass : if the cloth has been 

 well bleached, nuu-;lins will be white, on an average, in twc) 

 days, calicoes in four. The colours will have a much finer 

 hue than by the use of bran. 



N. B. Soap has been used for taking out stains, but by 

 branning before soaping the stain has been more fixed': 

 therefore bran should not be used. J 



A Table I 



