You will see from her letter that she uses many pronouns correctly.
She had been familiar with most herbs and their uses since she was a child, due to her father's business, but she had never actually seen the herbs growing.
Huygens (Descriptio automati planetarii, 1703) uses the simple continued fraction for the purpose of approximation when designing the toothed wheels of his Planetarium.
I recently gained access to this database that the company's owner uses.
Nearly everyone uses ball point pens.