Rthoe in his letter^to Hr# atetth,' says lead could not he the rj>feiibibl* agent for illness.

The loss of this substance may lead to attacks of cramps, unless the salts are replaced in the drinking water.

Some dusts are poisonous (lead, mercury, arsenic, manganese, and cadmium) and some act as irritants (silica, steel, iron, and granite).

Neutral bismuth carbonate was usually completely eliminated in 1 to 4 days, the acid subnitrate was excreted slightly more rapidly and the lead glass had disappeared in from 7 hrs. to 2 days.

I have a ls o had d ir e c t knowledge of s ix or seven deaths from acu te or gan ic lead poison in g in con n ection with the clea n in g of stor age tanks h e a vily contaminated with t e t r a e t h yl le a d or i t s d ecom p osit ion p r o d u ct s .

Some dusts are poisonous (lead, mercury, arsenic, manganese, and cadmium) and some act as irritants (silica, steel, iron, and granite).

The failure of white lead dust to produce pulmonary tuber culosis was due to the groat solubility of this dust in the lung tissues.

The handling of asbestos cloth can also lead to the emission of dust in certain circumstances.

Lead Industrie* Association < London Transport- Board / . . .

Joseph Lead Company Sauerelsan Cements Company Simonds Abrasive Division Wallace-Murray Corporation

White Lead 4.

UCATICa S* RIAL BO. 178,352, PGR: l'.rTH03 OF FHOIfcClHC rtiXTZ LEAD XILLIAX J.

This aethod of procedure should also wlnlalss unasceseasy travels ft tb* end of this phase of the survey w* will complete a final report contain ing our recommendation* for developing and promoting the uee of lead In the coostraotlon industry based oa our investigations undertaken la the previous phtee.

A considerable number of such cases were directed to the Cllnle, particu larly cases of lead poisoning, and contact was made with the industries from which they came.

n most potteries the use of lead is localized to dipping and glaze making, jt has been found that "fritting" the lead, i.e., smelting it into a glass before grinding into the glaze mixture, removes the danger of lead poisoning c lead silicates or borosilicates are compounded to be only slightly soluble in acids so that they are not readily absorbed by the system.