There were several reasons for Peter introducing his son to the true extent of the business earlier than had been the way in the past. One was his own deep weariness. This sometimes felt unbearable, although looking back he remembered tell-tale signs that indicated his own father suffered similarly, so he reasoned that he should be able to cope with it if necessary. But mainly it was the success of John’s heat storage discovery. The prolonged series of increasingly bitter and lengthy winters coupled with poor chilly summers was presenting serious problems to agriculture and industry throughout the world, and the ability to store excess heat at one location and move it to another for controlled release made a substantial contribution to solving many of these problems. Ownership of the syst

