1 “...What is the first thing that ordinary people, for whom journalists are the proxy, ask when...”

2 “... geophysical theories seek to explain paleomagnetic observations by - suming that two things have occurred...”

3 “... to others, or Jor profit, or Jame, or power, or any oJ these inJerior things, but Jor the benefit and use oJ...”

4 “... things impressed me. Few of those who wrote to me had any detailed foreknowledge of ball lightning...”

5 “..., to rearrange atoms with pick and shovel, and make funny things happen inside. Professor VON HIPPEL calls...”

6 “... sum of living things on our planet's continents and in its oceans. Second, it proposes...”

7 “... the solution of more-difficult problems. In another area, geochemistry, two things have happened...”