The monks of the middle ages—great theorists—divided the kiss into fifteen distinct and separate orders.
1. The decorous or modest kiss.
2. The diplomatic, or kiss of policy.
3. The spying kiss, to ascertain if a woman had drank wine.
4. The slave kiss.
5. The kiss infamous—a church penance.
6. The slipper kiss, practised towards tyrants.
7. The judicial kiss.
8. The feudal kiss.
9. The religious kiss (kissing the cross).