Show dangerous wall paper I 1 Proff proffesor ebor 11 II presented facts to the tion in ills paper on alie tile quantity of arsenic contained in wall walf papers scientifically speaking he said probably pio bably v no paper in tile llie market is sti icily free from arsenic for faint indications of it way may alwa always y s be discovered hen specially delicate tests are arc applied for tile llie present purpose papers containing less ill alian ill one of a i grain of arsenic to lo the llie yard ore aru taid haid to te he free thirty une one sampled or of paper dahich iacre regarded is ai an aicra average 0 e one yielded on oil ullysis ua lysis an ail average average of 22 grains to the ho square 3 of nid al it 11 was to lo ti the 1 papers apers so that their prevailing colors olor nou id bear any simple ir ic lations to the amount of ars illo covered erad A paper illk illi cecii ground in ill arseniu might inight ca have been bee suspected was wa life only oie in ili tc lot free eifle a p paper aper nearly white contained I 1 a quarter of 1 n I 0 grain arrain papers warranted strictly free from are enic by tile the also contained notable quantities in gendral geu gen cral arsenic is wore more abundant in the figure figure c than in tile 0 ground and lit in brilli brilliant brillia ant nl in ili lights light 0 ned p an n per juist now to in calnon fal non carmine red li particularly distinguished by tho the of it usually yields this is to be attributed to the arsenic employed loyed in ill tle the mauu f of aniline red the coulm common on red chloi ing 0 matter of paper find from which ia its manufactures manufacture tile aniline f fragment rag went is impera imperfectly estly f reed freed this same red dye with its arsenical impurity is unfortunately largely employed on account of its resemblance bl to themore the more costly coch cochineal ineat in coloring worsted and woolen onder underwear der wear it may be cosil easily y dieth distinguished aiom the litter latter by the hie readiness with which it imports imparts its color to wash water or the skin with willi which it comes in contact unfortunately hoere is no guide in the scle selection elon of papers tree free from chemical analysis and no security to the purchaser unless by a prohibitory law duty duly enforced |