Gunpowder was also made with saltpetre and sulphur found in the country.

But I could find no saltpetre; indeed, no nitrates of any kind.

A large building in which quantities of saltpetre was stored caught next.

There is no appearance of sulphur, saltpetre or any other combustible material.

He got saltpetre and one or two other things from the chemist.

Salt and saltpetre are 'made from the soil immediately round the town.

The earth was as bleached as though covered with snow or saltpetre.

Gold is the most abundant; but saltpetre and naphtha are among the products.

The saltpetre acts on the kidneys, carrying off the impurities in this way.

For the time being saltpetre is obtained by all countries from Chile only.

Round about them there is a thin crust of saltpetre, magnesia, and salt.

What shall she do when her stock of saltpetre runs out?

Rotten lemons, iron filings, and saltpetre, by all that is abominable!

I heard the spluttering of a port-fire, and smelt the saltpetre of the match.

Neither metal, saltpetre, nor coal can be wanting in the bowels of the moon.

Parisians discovered saltpetre in their cellars when they no longer received any from abroad.