Aprll 20, 1027 11 ~iunibcr of britiids wliicli arc rccogiiisctl atid ucceptctl ns giving p p r s of spccinl qii:ilitics. This c ~~i i p i i i i ~ also has pcrfcctcd s1)ccinl mnkcs of pulp :itl:iptcd to thc rcquircments of thc nrtificinl silk industry.
Tlicsc arc only ynrticulnr instnnccs of tlcvclopmc~tts wliicli linrc bccii " latent. " or potential cvcc siiicc the first prnduction of thc " siilpliit~. pulps " in 1578-53. It is evident tltat the bisulpltitc JXOCCSS (luring tlicsc 50 years of mnssivc production Itns becti rigorously stniidnrdiscd, i i t rcspcct of tlic dcpcndciice of thc qitnlitics of tltc prodiict upon the conditiort of the proccss ; it. is n spccinl cs:implc of tlic cnormoits rango of vnriatioiis of qitnlity of :I n.ztural rttw nintcrinl thit are rcnlisable under mcthodical study-the coni1)iiicd study of obscrvntioii, cliicfly of cstcriinl qitnlities, by fnctory workers iitid i;hc tIcclicr obscrvntioiis of t,lic research staff in studying tlic iiinterinl i n rcl:itioii to first principles. A s . migltt be cspectcd, tlic grcntcstportion of t,ltc tot+ output, to-day is sulpltitc p i l p coiitniiiing up to SO%, of ground wood pulp (so-c:tllctl Inccltnnicnl pulp) for iicivspriiit. 'J'ltc output. of this proilitct lins gro~rn vcry rnpitlly : tlic first groutid \voo(l inill n t lrnllcyficld, Cii,iindn, Iincl n tiirtiovcr of 2 tons n day ; tlic lnrgc inill of to-day will turn out 490 tons n clny. In nboitt 10 ycnrs this product lins qun~lriiplctl in o u t p t , atid it is to-day nbout 2 million tons per niitiuin. Its futurc growtli is bound to bc nlso -cry rent, niid t.o rcnclt ultimnte iliiiic~isio~ts wlticlt caiiiiot,