The number beside the categories title indicates the number of images available, the latest image from each category is on the left:

2007 Nankai Scholarships and Bursaries Awarding Ceremony
(5  Photos)
Club Activities
(9  Photos)
Meetings
(5  Photos)
Members
(0  Photos)
regular meetings 2007-2008
(14  Photos)
Service
(8  Photos)