If files can only be cut on BARE lead, the men ought to cut their hair close, and wear a light cap at work.

They ought to have a canvas suit in the adjoining place (see above); don it when they come, and doff it when they go.

They ought to leave off their insane habit of licking the thumb and finger of the left hand--which is the leaded hand--with their tongues.

This beastly trick takes the poison direct to the stomach.

They might surely leave it to get there through the pores; it is slow, but sure.