fluoride number

Placed in drinking water, fluoride can serve people who otherwise have poor access to dental care.

The country is well inhabited, for it contains fifty-one cities, near a hundred walled towns, and a great number of villages.

We had six field-pieces, but we only took four, harnessed wit twice the usual number of horses.

There are a number of bacilli, called acid-fast bacilli, which stain in the same way as the tubercle bacillus.

Five of the number had studied with Liszt before, and the young men are artists already before the public.

I do not think the average number of passengers on a corresponding route in our country could be so few as twenty.