1.The results of the reaction were discussed by them yesterday.
2. Sodium salts are prepared from the carbonate or hydroxide by us.
3. The problem is much spoken of by them.
4. The lecture will be followed by a discussion.
5. New data will be commented upon by them in this article.
6. The experiment was begun by us in the morning.
7. The metals are distinguished by the great affinity for oxygen.