41.   In some of the applied sciences the number of hours may be considerable while in an Arts course the formal teaching periods may be relatively few.

42.   There was a period of about twenty years when I had little to do with the club.

43.   He pointed out that the latency period is absent in primitive societies and is found only in higher cultures.

44.   Longer treatment and study periods would be necessary to investigate the influence of adsorbents on the severity and resolution of the colitis.

45.   Periods of hypoxia were common in the control group, but greatly reduced in patients receiving oxygen.

46.   The Enlightenment period is very much a Prayer and Liturgy centred time.

47.   The minimum latency period should be not much less than ten times the period between offline runs.

48.   The basic vulnerability of the peasantry was revealed when the economic climate became chillier, and for many families this period of prosperity was to prove short-lived.

49.   The washout periods were seven days.

50.   The London period had been primarily a test of willpower and improvisation.