Paper, 'A brief account of the experiments try'd with glass balls' by Robert Hooke Discusses eight experiments tried with glass balls: 1. For drawing out the air by heat only 2. Of drawing it out by vapours 3. Of their breaking of themselves 4. Of their breaking by a knock 5. Of the quantity of water they admitted 6. Of the height of the air admitted 7. Of their shrinking and stretching 8. Of their breaking outwards Also includes a diagram of these glass bulbs [CLP/20/3/2]. Subject: Physics, Natural Philosophy 17th century