The system notifies the user of the progress of a task by changing the appearance of the pointer. System-busy pointers usually adopt a timepiece metaphor.

It was generally believed, before the experiments made by M. Kuhn, but without any foundation, and upon simple conjecture, that the seminules or spores of the ustilagoes and uredoes of the cereals penetrate by the radicles of the plant in order to arrive, creeping by degrees, to the leaves and seeds of those vegetables.

disaffirmance of judgement

It occurred to us to make an experiment to see what degree the tension of the carbonic acid given off by natrium-bicarbonate would amount to, when heated in a closed space.