asked the Minister of Health why, with the exception of the Windsor type frame, cellulose nitrate is not allowed to be used in the manufacture of National Health Service spectacle frames.

Because its advantages are thought insufficient to outweigh the risk, however slight, of its catching fire in manufacture or wear.

asked the Minister of Health if he will state the quantities of cellulose nitrate and cellulose acetate used respectively in the manufacture of spectacle frames in this country.

I regret the information is not available.