On this subject, however, an observation occurs which is of some force as an apology for Napoleon.

But they do not know when observation may or may not be occurring.

Another important observation occurred a few days earlier, on October 30, 1960.

But here an observation that had not previously occurred to us presents itself.

Structured observation may occur in a natural or laboratory setting.

Consider that the observations of freshly killed porpoises and baby dolphins occurred in the 1990's.

Some interesting observations and events concerning the island occurred around this time.

These observations all occur within seconds of stimulus introduction.

These observations occurred in December 1999 and January 2000.

Nevertheless the size of such a system makes this observation almost impossible to occur.