111.   How do you tell the difference between the psychiatrists and the patients at the mental hospital?

112.   Scientists have found that rats can tell the difference between classical and jazz music, sorting out strains of Schubert from Coltrane, Vivaldi from Miles Davis.

113.   Similarly, trained professionals are able to tell the difference between the distresses of ordinary life and clinical depression or post-traumatic stress disorder.

114.   So maybe you also lose the ability to tell the difference in your own babies in a few old pictures.

115.   Some could hardly tell the difference.

116.   Some analysts also question whether most consumers can tell the difference.

117.   Soon the team could tell the difference in the droppings of at least eight animals.

118.   Some people have found their bad luck and good luck so intermixed that it is hard to tell the difference.

119.   Some people swear they can tell the difference.

120.   Systems used in Japan, Canada and other countries can tell the difference because each denomination has a different coating, which the machine detects.