Show silkworm has business rival f Chem chemical loal experts have found way to make serviceable betas from spruce pulp new haven A warning to the silkworm that certain chemical compounds which are his chief business rivals are inclined to combine against him end and a hint for him to study their modern efficient methods was given by W 0 of baltimore in hla his address on cellulose silk before the american chemical society while the silkworm turns out a high quality product and Is justified in n certain pride of skill mr said bold his stubborn refusal to heed the entreaties of the sales do de part ment to speed up Is playing havoc with hla his market tho the modern woman cannot conant be bothered to wait for him and so the spruce tree and the cotton plant are gobbling up the big orders these producers are willing to stand for the alio introduction of scientific methods for instance cellulose which la Is the technical name for spruce pulp and cotton lin finters Is very reasonable tho the most recent discovery in artificial silk manufacture Is that cellulose and acetic add acid combine under tile the proper chemical circumstances to make a very good silk one of tho the most favored efficiency devices of tho the chemist Is the use of what to Is known as a catalyst cUta lyst the catalyst Is the eHl elli clency ruan man of chemistry in t the caso case of the cellulose acetate silks the pulp or cotton flinters and acetic add acid naturally combine very slowly but the presence of sulphuric odd acid or or a zinc salt speeds up the reaction to a great pace the sulphuric add acid or zinc salt whichever Is used Is the catalyst c it does not become a part of the product but it stirs the cellulose and acetic add acid to great activity doctor Allt scherling said that the cellulose acetate formed after the catalyst has introduced the necessary L punch into the process Is then dissolved in acetic add acid or some other solvent and discharged through a nozzle containing exceedingly fine holes into water and immediately becomes a fine thread silk worm falls behind there ore are three other processes of making cellulose stilt silk and last year they were made to produce 8 per cent more taffetas taff crepe do de chine stockings etc than all the silkworms in the world the total was wag approximately pounds while doctor said that cellulose will never entirely replace genuine silk the textile mills fire are showing less ancl less patience with the laziness and indifference of the silkworm and he had better watch ills his steps or lie ho will soon be losing a nice lot of hij business to superior american ingenuity and progress |